Finding the Fourth Proportional to 87,867.98, 121,257.58 and 47,581.74
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Solution
The fourth proportional to 87,867.98, 121,257.58 and 47,581.74 is: 65,662.68
Step by Step Solution
- Step 1: Write the proportion equation
87,867.98 : 121,257.58 = 47,581.74 : x - Step 2: Convert to fraction form
87,867.98/121,257.58 = 47,581.74/x - Step 3: Cross multiply
87,867.98x = 121,257.58 × 47,581.74 - Step 4: Simplify right side
87,867.98x = 5,769,646,644.59 - Step 5: Solve for x
x = 5,769,646,644.59/87,867.98 - Step 6: Final answer
x = 65,662.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.