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Finding the Fourth Proportional to 71,247.40, 106,817.10 and 36,212.20

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Solution

The fourth proportional to 71,247.40, 106,817.10 and 36,212.20 is: 54,290.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,247.40 : 106,817.10 = 36,212.20 : x
  2. Step 2: Convert to fraction form
    71,247.40/106,817.10 = 36,212.20/x
  3. Step 3: Cross multiply
    71,247.40x = 106,817.10 × 36,212.20
  4. Step 4: Simplify right side
    71,247.40x = 3,868,082,188.62
  5. Step 5: Solve for x
    x = 3,868,082,188.62/71,247.40
  6. Step 6: Final answer
    x = 54,290.85

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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.