What is x when 43 divided by x equals 87?

To find the answer, just divide the dividend by the quotient: 43 ÷ 87 = 0.49425287356322

To prove this, let's compute 43 divided by 0.49425287356322: $\frac{43}{0.49425287356322} = 87$

How does it work?

Asking what the value of x could be when 43 divided by x gives a result of 87, is equivalent to solving the following equation:

$\frac{43}{x} = 87$

Multiply both sides by x: $\frac{43 x}{x} = 87 x$
$\frac{43 x}{x}$ is equivalent to $\frac{x}{x} \times 43$ , which simplifies to $1 \times 43$ (or just $43$ ).
Thus, the equation becomes: $43 = 87 x$
To find x, divide both sides by 87: $\frac{43}{87} = \frac{87 x}{87}$
Which gives, after simplification: $0.49425287356322 = x$ (or $x = 0.49425287356322$ )

So, if the dividend is 43 and the quotient is 87, the divisor is 0.49425287356322.