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Finding the Fourth Proportional to 80,411.52, 120,484.35 and 27,791.76

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Solution

The fourth proportional to 80,411.52, 120,484.35 and 27,791.76 is: 41,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,411.52 : 120,484.35 = 27,791.76 : x
  2. Step 2: Convert to fraction form
    80,411.52/120,484.35 = 27,791.76/x
  3. Step 3: Cross multiply
    80,411.52x = 120,484.35 × 27,791.76
  4. Step 4: Simplify right side
    80,411.52x = 3,348,472,138.96
  5. Step 5: Solve for x
    x = 3,348,472,138.96/80,411.52
  6. Step 6: Final answer
    x = 41,641.70

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1.5x scale

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.