Home / 87,945.30-121,357.29-49,708.11

Finding the Fourth Proportional to 87,945.30, 121,357.29 and 49,708.11

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Solution

The fourth proportional to 87,945.30, 121,357.29 and 49,708.11 is: 68,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,945.30 : 121,357.29 = 49,708.11 : x
  2. Step 2: Convert to fraction form
    87,945.30/121,357.29 = 49,708.11/x
  3. Step 3: Cross multiply
    87,945.30x = 121,357.29 × 49,708.11
  4. Step 4: Simplify right side
    87,945.30x = 6,032,441,520.62
  5. Step 5: Solve for x
    x = 6,032,441,520.62/87,945.30
  6. Step 6: Final answer
    x = 68,593.11

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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.