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Finding the Fourth Proportional to 80,765.68, 121,141.60 and 49,167.54

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Solution

The fourth proportional to 80,765.68, 121,141.60 and 49,167.54 is: 73,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,765.68 : 121,141.60 = 49,167.54 : x
  2. Step 2: Convert to fraction form
    80,765.68/121,141.60 = 49,167.54/x
  3. Step 3: Cross multiply
    80,765.68x = 121,141.60 × 49,167.54
  4. Step 4: Simplify right side
    80,765.68x = 5,956,234,463.66
  5. Step 5: Solve for x
    x = 5,956,234,463.66/80,765.68
  6. Step 6: Final answer
    x = 73,747.10

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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.