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Finding the Fourth Proportional to 87,606, 120,917.88 and 49,902.48

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Solution

The fourth proportional to 87,606, 120,917.88 and 49,902.48 is: 68,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,606 : 120,917.88 = 49,902.48 : x
  2. Step 2: Convert to fraction form
    87,606/120,917.88 = 49,902.48/x
  3. Step 3: Cross multiply
    87,606x = 120,917.88 × 49,902.48
  4. Step 4: Simplify right side
    87,606x = 6,034,102,088.34
  5. Step 5: Solve for x
    x = 6,034,102,088.34/87,606
  6. Step 6: Final answer
    x = 68,877.73

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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.