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Finding the Fourth Proportional to 80,563.80, 120,845.70 and 73,306.20

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Solution

The fourth proportional to 80,563.80, 120,845.70 and 73,306.20 is: 109,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.80 : 120,845.70 = 73,306.20 : x
  2. Step 2: Convert to fraction form
    80,563.80/120,845.70 = 73,306.20/x
  3. Step 3: Cross multiply
    80,563.80x = 120,845.70 × 73,306.20
  4. Step 4: Simplify right side
    80,563.80x = 8,858,739,053.34
  5. Step 5: Solve for x
    x = 8,858,739,053.34/80,563.80
  6. Step 6: Final answer
    x = 109,959.30

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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.