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Finding the Fourth Proportional to 80,793.72, 121,242.42 and 39,218.04

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Solution

The fourth proportional to 80,793.72, 121,242.42 and 39,218.04 is: 58,852.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,793.72 : 121,242.42 = 39,218.04 : x
  2. Step 2: Convert to fraction form
    80,793.72/121,242.42 = 39,218.04/x
  3. Step 3: Cross multiply
    80,793.72x = 121,242.42 × 39,218.04
  4. Step 4: Simplify right side
    80,793.72x = 4,754,890,077.26
  5. Step 5: Solve for x
    x = 4,754,890,077.26/80,793.72
  6. Step 6: Final answer
    x = 58,852.22

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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.