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Finding the Fourth Proportional to 87,694.86, 131,561.78 and 40,922.22

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Solution

The fourth proportional to 87,694.86, 131,561.78 and 40,922.22 is: 61,392.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,694.86 : 131,561.78 = 40,922.22 : x
  2. Step 2: Convert to fraction form
    87,694.86/131,561.78 = 40,922.22/x
  3. Step 3: Cross multiply
    87,694.86x = 131,561.78 × 40,922.22
  4. Step 4: Simplify right side
    87,694.86x = 5,383,800,104.75
  5. Step 5: Solve for x
    x = 5,383,800,104.75/87,694.86
  6. Step 6: Final answer
    x = 61,392.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.