Home / 87,945.80-121,357.98-49,708.61

Finding the Fourth Proportional to 87,945.80, 121,357.98 and 49,708.61

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Solution

The fourth proportional to 87,945.80, 121,357.98 and 49,708.61 is: 68,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,945.80 : 121,357.98 = 49,708.61 : x
  2. Step 2: Convert to fraction form
    87,945.80/121,357.98 = 49,708.61/x
  3. Step 3: Cross multiply
    87,945.80x = 121,357.98 × 49,708.61
  4. Step 4: Simplify right side
    87,945.80x = 6,032,536,498.21
  5. Step 5: Solve for x
    x = 6,032,536,498.21/87,945.80
  6. Step 6: Final answer
    x = 68,593.80

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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.