Home / 83,891.09-125,809.97-27,720.72

Finding the Fourth Proportional to 83,891.09, 125,809.97 and 27,720.72

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Solution

The fourth proportional to 83,891.09, 125,809.97 and 27,720.72 is: 41,572.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,891.09 : 125,809.97 = 27,720.72 : x
  2. Step 2: Convert to fraction form
    83,891.09/125,809.97 = 27,720.72/x
  3. Step 3: Cross multiply
    83,891.09x = 125,809.97 × 27,720.72
  4. Step 4: Simplify right side
    83,891.09x = 3,487,542,812.97
  5. Step 5: Solve for x
    x = 3,487,542,812.97/83,891.09
  6. Step 6: Final answer
    x = 41,572.27

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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.