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Finding the Fourth Proportional to 87,614.60, 131,454.30 and 84,374.60

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Solution

The fourth proportional to 87,614.60, 131,454.30 and 84,374.60 is: 126,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,614.60 : 131,454.30 = 84,374.60 : x
  2. Step 2: Convert to fraction form
    87,614.60/131,454.30 = 84,374.60/x
  3. Step 3: Cross multiply
    87,614.60x = 131,454.30 × 84,374.60
  4. Step 4: Simplify right side
    87,614.60x = 11,091,403,980.78
  5. Step 5: Solve for x
    x = 11,091,403,980.78/87,614.60
  6. Step 6: Final answer
    x = 126,593.10

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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.