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Finding the Fourth Proportional to 80,138.73, 110,625.47 and 49,938.96

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Solution

The fourth proportional to 80,138.73, 110,625.47 and 49,938.96 is: 68,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,138.73 : 110,625.47 = 49,938.96 : x
  2. Step 2: Convert to fraction form
    80,138.73/110,625.47 = 49,938.96/x
  3. Step 3: Cross multiply
    80,138.73x = 110,625.47 × 49,938.96
  4. Step 4: Simplify right side
    80,138.73x = 5,524,520,921.31
  5. Step 5: Solve for x
    x = 5,524,520,921.31/80,138.73
  6. Step 6: Final answer
    x = 68,936.97

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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.