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Finding the Fourth Proportional to 71,737.88, 98,996.24 and 39,907.85

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Solution

The fourth proportional to 71,737.88, 98,996.24 and 39,907.85 is: 55,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,737.88 : 98,996.24 = 39,907.85 : x
  2. Step 2: Convert to fraction form
    71,737.88/98,996.24 = 39,907.85/x
  3. Step 3: Cross multiply
    71,737.88x = 98,996.24 × 39,907.85
  4. Step 4: Simplify right side
    71,737.88x = 3,950,726,701.27
  5. Step 5: Solve for x
    x = 3,950,726,701.27/71,737.88
  6. Step 6: Final answer
    x = 55,071.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.