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Finding the Fourth Proportional to 71,817.62, 108,264.23 and 67,000.75

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Solution

The fourth proportional to 71,817.62, 108,264.23 and 67,000.75 is: 101,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,817.62 : 108,264.23 = 67,000.75 : x
  2. Step 2: Convert to fraction form
    71,817.62/108,264.23 = 67,000.75/x
  3. Step 3: Cross multiply
    71,817.62x = 108,264.23 × 67,000.75
  4. Step 4: Simplify right side
    71,817.62x = 7,253,783,731.85
  5. Step 5: Solve for x
    x = 7,253,783,731.85/71,817.62
  6. Step 6: Final answer
    x = 101,002.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.