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Finding the Fourth Proportional to 80,874.39, 111,571.45 and 48,621.61

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Solution

The fourth proportional to 80,874.39, 111,571.45 and 48,621.61 is: 67,076.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,874.39 : 111,571.45 = 48,621.61 : x
  2. Step 2: Convert to fraction form
    80,874.39/111,571.45 = 48,621.61/x
  3. Step 3: Cross multiply
    80,874.39x = 111,571.45 × 48,621.61
  4. Step 4: Simplify right side
    80,874.39x = 5,424,783,128.55
  5. Step 5: Solve for x
    x = 5,424,783,128.55/80,874.39
  6. Step 6: Final answer
    x = 67,076.65

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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.