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Finding the Fourth Proportional to 80,960.96, 111,792.48 and 55,766.72

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Solution

The fourth proportional to 80,960.96, 111,792.48 and 55,766.72 is: 77,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,960.96 : 111,792.48 = 55,766.72 : x
  2. Step 2: Convert to fraction form
    80,960.96/111,792.48 = 55,766.72/x
  3. Step 3: Cross multiply
    80,960.96x = 111,792.48 × 55,766.72
  4. Step 4: Simplify right side
    80,960.96x = 6,234,299,930.27
  5. Step 5: Solve for x
    x = 6,234,299,930.27/80,960.96
  6. Step 6: Final answer
    x = 77,003.78

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1.5x scale

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.