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Finding the Fourth Proportional to 81,493.98, 122,211.81 and 44,081.70

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Solution

The fourth proportional to 81,493.98, 122,211.81 and 44,081.70 is: 66,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,493.98 : 122,211.81 = 44,081.70 : x
  2. Step 2: Convert to fraction form
    81,493.98/122,211.81 = 44,081.70/x
  3. Step 3: Cross multiply
    81,493.98x = 122,211.81 × 44,081.70
  4. Step 4: Simplify right side
    81,493.98x = 5,387,304,344.88
  5. Step 5: Solve for x
    x = 5,387,304,344.88/81,493.98
  6. Step 6: Final answer
    x = 66,106.78

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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.