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Finding the Fourth Proportional to 79,862.98, 119,780.42 and 29,251.55

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Solution

The fourth proportional to 79,862.98, 119,780.42 and 29,251.55 is: 43,872.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,862.98 : 119,780.42 = 29,251.55 : x
  2. Step 2: Convert to fraction form
    79,862.98/119,780.42 = 29,251.55/x
  3. Step 3: Cross multiply
    79,862.98x = 119,780.42 × 29,251.55
  4. Step 4: Simplify right side
    79,862.98x = 3,503,762,944.65
  5. Step 5: Solve for x
    x = 3,503,762,944.65/79,862.98
  6. Step 6: Final answer
    x = 43,872.18

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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.