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Finding the Fourth Proportional to 87,861.60, 131,879.88 and 48,437.28

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Solution

The fourth proportional to 87,861.60, 131,879.88 and 48,437.28 is: 72,704.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.60 : 131,879.88 = 48,437.28 : x
  2. Step 2: Convert to fraction form
    87,861.60/131,879.88 = 48,437.28/x
  3. Step 3: Cross multiply
    87,861.60x = 131,879.88 × 48,437.28
  4. Step 4: Simplify right side
    87,861.60x = 6,387,902,673.93
  5. Step 5: Solve for x
    x = 6,387,902,673.93/87,861.60
  6. Step 6: Final answer
    x = 72,704.15

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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.