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Finding the Fourth Proportional to 87,736, 131,617.68 and 28,557.70

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Solution

The fourth proportional to 87,736, 131,617.68 and 28,557.70 is: 42,841.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,736 : 131,617.68 = 28,557.70 : x
  2. Step 2: Convert to fraction form
    87,736/131,617.68 = 28,557.70/x
  3. Step 3: Cross multiply
    87,736x = 131,617.68 × 28,557.70
  4. Step 4: Simplify right side
    87,736x = 3,758,698,220.14
  5. Step 5: Solve for x
    x = 3,758,698,220.14/87,736
  6. Step 6: Final answer
    x = 42,841.00

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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.