Home / 87,839.28-121,103.82-55,996.56

Finding the Fourth Proportional to 87,839.28, 121,103.82 and 55,996.56

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Solution

The fourth proportional to 87,839.28, 121,103.82 and 55,996.56 is: 77,202.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,839.28 : 121,103.82 = 55,996.56 : x
  2. Step 2: Convert to fraction form
    87,839.28/121,103.82 = 55,996.56/x
  3. Step 3: Cross multiply
    87,839.28x = 121,103.82 × 55,996.56
  4. Step 4: Simplify right side
    87,839.28x = 6,781,397,322.86
  5. Step 5: Solve for x
    x = 6,781,397,322.86/87,839.28
  6. Step 6: Final answer
    x = 77,202.33

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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.