51.44 is what percent of 40 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 40 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 40, so we can write it down as 100%=40.
4. We know, that x% equals 51.44 of the output value, so we can write it down as x%=51.44.
5. Now we have two simple equations:
1) 100%=40
2) x%=51.44
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=40/51.44
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 51.44 is what percent of 40

100%/x%=40/51.44
(100/x)*x=(40/51.44)*x       - we multiply both sides of the equation by x
100=0.77760497667185*x       - we divide both sides of the equation by (0.77760497667185) to get x
100/0.77760497667185=x
128.6=x
x=128.6

now we have:
51.44 is 128.6% of 40