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Finding the Fourth Proportional to 87,616, 120,911.04 and 47,872

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Solution

The fourth proportional to 87,616, 120,911.04 and 47,872 is: 66,063.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,616 : 120,911.04 = 47,872 : x
  2. Step 2: Convert to fraction form
    87,616/120,911.04 = 47,872/x
  3. Step 3: Cross multiply
    87,616x = 120,911.04 × 47,872
  4. Step 4: Simplify right side
    87,616x = 5,788,253,306.88
  5. Step 5: Solve for x
    x = 5,788,253,306.88/87,616
  6. Step 6: Final answer
    x = 66,063.88

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