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Finding the Fourth Proportional to 71,134.04, 106,812.03 and 67,979.09

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Solution

The fourth proportional to 71,134.04, 106,812.03 and 67,979.09 is: 102,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,134.04 : 106,812.03 = 67,979.09 : x
  2. Step 2: Convert to fraction form
    71,134.04/106,812.03 = 67,979.09/x
  3. Step 3: Cross multiply
    71,134.04x = 106,812.03 × 67,979.09
  4. Step 4: Simplify right side
    71,134.04x = 7,260,984,600.45
  5. Step 5: Solve for x
    x = 7,260,984,600.45/71,134.04
  6. Step 6: Final answer
    x = 102,074.68

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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.