What is 45.9 percent of 40.8 - 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 40.8 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 40.8 is 100%, so we can write it down as 40.8=100%.
4. We know, that x is 45.9% of the output value, so we can write it down as x=45.9%.
5. Now we have two simple equations:
1) 40.8=100%
2) x=45.9%
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:
40.8/x=100%/45.9%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 45.9% of 40.8

40.8/x=100/45.9
(40.8/x)*x=(100/45.9)*x       - we multiply both sides of the equation by x
40.8=2.1786492374728*x       - we divide both sides of the equation by (2.1786492374728) to get x
40.8/2.1786492374728=x
18.7272=x
x=18.7272

now we have:
45.9% of 40.8=18.7272