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Finding the Fourth Proportional to 80,841.80, 121,187.88 and 41,311.78

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Solution

The fourth proportional to 80,841.80, 121,187.88 and 41,311.78 is: 61,929.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,841.80 : 121,187.88 = 41,311.78 : x
  2. Step 2: Convert to fraction form
    80,841.80/121,187.88 = 41,311.78/x
  3. Step 3: Cross multiply
    80,841.80x = 121,187.88 × 41,311.78
  4. Step 4: Simplify right side
    80,841.80x = 5,006,486,734.26
  5. Step 5: Solve for x
    x = 5,006,486,734.26/80,841.80
  6. Step 6: Final answer
    x = 61,929.43

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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.