Home / 87,982.74-121,463.29-68,821.80

Finding the Fourth Proportional to 87,982.74, 121,463.29 and 68,821.80

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Solution

The fourth proportional to 87,982.74, 121,463.29 and 68,821.80 is: 95,010.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,982.74 : 121,463.29 = 68,821.80 : x
  2. Step 2: Convert to fraction form
    87,982.74/121,463.29 = 68,821.80/x
  3. Step 3: Cross multiply
    87,982.74x = 121,463.29 × 68,821.80
  4. Step 4: Simplify right side
    87,982.74x = 8,359,322,251.72
  5. Step 5: Solve for x
    x = 8,359,322,251.72/87,982.74
  6. Step 6: Final answer
    x = 95,010.93

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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.