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Finding the Fourth Proportional to 87,616.62, 120,910.84 and 47,330.38

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Solution

The fourth proportional to 87,616.62, 120,910.84 and 47,330.38 is: 65,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,616.62 : 120,910.84 = 47,330.38 : x
  2. Step 2: Convert to fraction form
    87,616.62/120,910.84 = 47,330.38/x
  3. Step 3: Cross multiply
    87,616.62x = 120,910.84 × 47,330.38
  4. Step 4: Simplify right side
    87,616.62x = 5,722,756,003.32
  5. Step 5: Solve for x
    x = 5,722,756,003.32/87,616.62
  6. Step 6: Final answer
    x = 65,315.87

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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.