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Finding the Fourth Proportional to 83,792.44, 125,612.10 and 76,487.86

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Solution

The fourth proportional to 83,792.44, 125,612.10 and 76,487.86 is: 114,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,792.44 : 125,612.10 = 76,487.86 : x
  2. Step 2: Convert to fraction form
    83,792.44/125,612.10 = 76,487.86/x
  3. Step 3: Cross multiply
    83,792.44x = 125,612.10 × 76,487.86
  4. Step 4: Simplify right side
    83,792.44x = 9,607,800,719.11
  5. Step 5: Solve for x
    x = 9,607,800,719.11/83,792.44
  6. Step 6: Final answer
    x = 114,661.90

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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.