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Finding the Fourth Proportional to 80,211.80, 110,691.86 and 43,916.54

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Solution

The fourth proportional to 80,211.80, 110,691.86 and 43,916.54 is: 60,604.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.80 : 110,691.86 = 43,916.54 : x
  2. Step 2: Convert to fraction form
    80,211.80/110,691.86 = 43,916.54/x
  3. Step 3: Cross multiply
    80,211.80x = 110,691.86 × 43,916.54
  4. Step 4: Simplify right side
    80,211.80x = 4,861,202,724.32
  5. Step 5: Solve for x
    x = 4,861,202,724.32/80,211.80
  6. Step 6: Final answer
    x = 60,604.59

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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.