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Finding the Fourth Proportional to 83,809.74, 125,687.92 and 27,639.35

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Solution

The fourth proportional to 83,809.74, 125,687.92 and 27,639.35 is: 41,450.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,809.74 : 125,687.92 = 27,639.35 : x
  2. Step 2: Convert to fraction form
    83,809.74/125,687.92 = 27,639.35/x
  3. Step 3: Cross multiply
    83,809.74x = 125,687.92 × 27,639.35
  4. Step 4: Simplify right side
    83,809.74x = 3,473,932,411.65
  5. Step 5: Solve for x
    x = 3,473,932,411.65/83,809.74
  6. Step 6: Final answer
    x = 41,450.22

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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.