Finding the Fourth Proportional to 87,728.44, 131,561.58 and 28,553.08
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Solution
The fourth proportional to 87,728.44, 131,561.58 and 28,553.08 is: 42,819.50
Step by Step Solution
- Step 1: Write the proportion equation
87,728.44 : 131,561.58 = 28,553.08 : x - Step 2: Convert to fraction form
87,728.44/131,561.58 = 28,553.08/x - Step 3: Cross multiply
87,728.44x = 131,561.58 × 28,553.08 - Step 4: Simplify right side
87,728.44x = 3,756,488,318.67 - Step 5: Solve for x
x = 3,756,488,318.67/87,728.44 - Step 6: Final answer
x = 42,819.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.