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Finding the Fourth Proportional to 87,505.87, 131,309.78 and 36,901.80

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Solution

The fourth proportional to 87,505.87, 131,309.78 and 36,901.80 is: 55,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,505.87 : 131,309.78 = 36,901.80 : x
  2. Step 2: Convert to fraction form
    87,505.87/131,309.78 = 36,901.80/x
  3. Step 3: Cross multiply
    87,505.87x = 131,309.78 × 36,901.80
  4. Step 4: Simplify right side
    87,505.87x = 4,845,567,239.60
  5. Step 5: Solve for x
    x = 4,845,567,239.60/87,505.87
  6. Step 6: Final answer
    x = 55,374.20

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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.