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Finding the Fourth Proportional to 87,503.56, 120,755.28 and 49,263.76

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Solution

The fourth proportional to 87,503.56, 120,755.28 and 49,263.76 is: 67,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,503.56 : 120,755.28 = 49,263.76 : x
  2. Step 2: Convert to fraction form
    87,503.56/120,755.28 = 49,263.76/x
  3. Step 3: Cross multiply
    87,503.56x = 120,755.28 × 49,263.76
  4. Step 4: Simplify right side
    87,503.56x = 5,948,859,132.65
  5. Step 5: Solve for x
    x = 5,948,859,132.65/87,503.56
  6. Step 6: Final answer
    x = 67,984.20

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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.