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Finding the Fourth Proportional to 80,751.33, 121,118.49 and 21,592.98

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Solution

The fourth proportional to 80,751.33, 121,118.49 and 21,592.98 is: 32,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,751.33 : 121,118.49 = 21,592.98 : x
  2. Step 2: Convert to fraction form
    80,751.33/121,118.49 = 21,592.98/x
  3. Step 3: Cross multiply
    80,751.33x = 121,118.49 × 21,592.98
  4. Step 4: Simplify right side
    80,751.33x = 2,615,309,132.20
  5. Step 5: Solve for x
    x = 2,615,309,132.20/80,751.33
  6. Step 6: Final answer
    x = 32,387.20

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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.