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Finding the Fourth Proportional to 72,067.40, 108,117.30 and 22,149.80

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Solution

The fourth proportional to 72,067.40, 108,117.30 and 22,149.80 is: 33,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,067.40 : 108,117.30 = 22,149.80 : x
  2. Step 2: Convert to fraction form
    72,067.40/108,117.30 = 22,149.80/x
  3. Step 3: Cross multiply
    72,067.40x = 108,117.30 × 22,149.80
  4. Step 4: Simplify right side
    72,067.40x = 2,394,776,571.54
  5. Step 5: Solve for x
    x = 2,394,776,571.54/72,067.40
  6. Step 6: Final answer
    x = 33,229.68

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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.