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Finding the Fourth Proportional to 71,567.70, 107,265.15 and 36,489.30

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Solution

The fourth proportional to 71,567.70, 107,265.15 and 36,489.30 is: 54,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,567.70 : 107,265.15 = 36,489.30 : x
  2. Step 2: Convert to fraction form
    71,567.70/107,265.15 = 36,489.30/x
  3. Step 3: Cross multiply
    71,567.70x = 107,265.15 × 36,489.30
  4. Step 4: Simplify right side
    71,567.70x = 3,914,030,237.90
  5. Step 5: Solve for x
    x = 3,914,030,237.90/71,567.70
  6. Step 6: Final answer
    x = 54,689.90

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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.