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Finding the Fourth Proportional to 87,560.88, 120,838.68 and 49,847.28

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Solution

The fourth proportional to 87,560.88, 120,838.68 and 49,847.28 is: 68,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,560.88 : 120,838.68 = 49,847.28 : x
  2. Step 2: Convert to fraction form
    87,560.88/120,838.68 = 49,847.28/x
  3. Step 3: Cross multiply
    87,560.88x = 120,838.68 × 49,847.28
  4. Step 4: Simplify right side
    87,560.88x = 6,023,479,516.79
  5. Step 5: Solve for x
    x = 6,023,479,516.79/87,560.88
  6. Step 6: Final answer
    x = 68,791.90

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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.