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Finding the Fourth Proportional to 87,693.86, 131,560.28 and 40,921.22

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Solution

The fourth proportional to 87,693.86, 131,560.28 and 40,921.22 is: 61,390.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,693.86 : 131,560.28 = 40,921.22 : x
  2. Step 2: Convert to fraction form
    87,693.86/131,560.28 = 40,921.22/x
  3. Step 3: Cross multiply
    87,693.86x = 131,560.28 × 40,921.22
  4. Step 4: Simplify right side
    87,693.86x = 5,383,607,161.14
  5. Step 5: Solve for x
    x = 5,383,607,161.14/87,693.86
  6. Step 6: Final answer
    x = 61,390.92

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1.5x scale

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.