Home / 76,540.50-105,589.09-49,691.43

Finding the Fourth Proportional to 76,540.50, 105,589.09 and 49,691.43

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Solution

The fourth proportional to 76,540.50, 105,589.09 and 49,691.43 is: 68,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,540.50 : 105,589.09 = 49,691.43 : x
  2. Step 2: Convert to fraction form
    76,540.50/105,589.09 = 49,691.43/x
  3. Step 3: Cross multiply
    76,540.50x = 105,589.09 × 49,691.43
  4. Step 4: Simplify right side
    76,540.50x = 5,246,872,626.04
  5. Step 5: Solve for x
    x = 5,246,872,626.04/76,540.50
  6. Step 6: Final answer
    x = 68,550.28

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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.