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Finding the Fourth Proportional to 71,468.28, 107,188.58 and 67,912.02

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Solution

The fourth proportional to 71,468.28, 107,188.58 and 67,912.02 is: 101,854.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,468.28 : 107,188.58 = 67,912.02 : x
  2. Step 2: Convert to fraction form
    71,468.28/107,188.58 = 67,912.02/x
  3. Step 3: Cross multiply
    71,468.28x = 107,188.58 × 67,912.02
  4. Step 4: Simplify right side
    71,468.28x = 7,279,393,158.51
  5. Step 5: Solve for x
    x = 7,279,393,158.51/71,468.28
  6. Step 6: Final answer
    x = 101,854.88

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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.