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Finding the Fourth Proportional to 71,479.96, 107,387.48 and 67,440.53

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Solution

The fourth proportional to 71,479.96, 107,387.48 and 67,440.53 is: 101,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,479.96 : 107,387.48 = 67,440.53 : x
  2. Step 2: Convert to fraction form
    71,479.96/107,387.48 = 67,440.53/x
  3. Step 3: Cross multiply
    71,479.96x = 107,387.48 × 67,440.53
  4. Step 4: Simplify right side
    71,479.96x = 7,242,268,658.57
  5. Step 5: Solve for x
    x = 7,242,268,658.57/71,479.96
  6. Step 6: Final answer
    x = 101,318.87

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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.