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Finding the Fourth Proportional to 80,793.81, 111,502.49 and 47,270.61

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Solution

The fourth proportional to 80,793.81, 111,502.49 and 47,270.61 is: 65,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,793.81 : 111,502.49 = 47,270.61 : x
  2. Step 2: Convert to fraction form
    80,793.81/111,502.49 = 47,270.61/x
  3. Step 3: Cross multiply
    80,793.81x = 111,502.49 × 47,270.61
  4. Step 4: Simplify right side
    80,793.81x = 5,270,790,482.47
  5. Step 5: Solve for x
    x = 5,270,790,482.47/80,793.81
  6. Step 6: Final answer
    x = 65,237.55

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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.