4.31 is what percent of 87.18 - 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 87.18 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 87.18, so we can write it down as 100%=87.18.
4. We know, that x% equals 4.31 of the output value, so we can write it down as x%=4.31.
5. Now we have two simple equations:
1) 100%=87.18
2) x%=4.31
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%=87.18/4.31
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 4.31 is what percent of 87.18

100%/x%=87.18/4.31
(100/x)*x=(87.18/4.31)*x       - we multiply both sides of the equation by x
100=20.227378190255*x       - we divide both sides of the equation by (20.227378190255) to get x
100/20.227378190255=x
4.943794448268=x
x=4.943794448268

now we have:
4.31 is 4.943794448268% of 87.18