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Finding the Fourth Proportional to 87,167.60, 120,251.40 and 56,944.88

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Solution

The fourth proportional to 87,167.60, 120,251.40 and 56,944.88 is: 78,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,167.60 : 120,251.40 = 56,944.88 : x
  2. Step 2: Convert to fraction form
    87,167.60/120,251.40 = 56,944.88/x
  3. Step 3: Cross multiply
    87,167.60x = 120,251.40 × 56,944.88
  4. Step 4: Simplify right side
    87,167.60x = 6,847,701,542.83
  5. Step 5: Solve for x
    x = 6,847,701,542.83/87,167.60
  6. Step 6: Final answer
    x = 78,557.88

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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.