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Finding the Fourth Proportional to 88,042.20, 131,860.80 and 72,295.80

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Solution

The fourth proportional to 88,042.20, 131,860.80 and 72,295.80 is: 108,277.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,042.20 : 131,860.80 = 72,295.80 : x
  2. Step 2: Convert to fraction form
    88,042.20/131,860.80 = 72,295.80/x
  3. Step 3: Cross multiply
    88,042.20x = 131,860.80 × 72,295.80
  4. Step 4: Simplify right side
    88,042.20x = 9,532,982,024.64
  5. Step 5: Solve for x
    x = 9,532,982,024.64/88,042.20
  6. Step 6: Final answer
    x = 108,277.42

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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.