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Finding the Fourth Proportional to 80,676, 121,020.39 and 24,520.98

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Solution

The fourth proportional to 80,676, 121,020.39 and 24,520.98 is: 36,783.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,676 : 121,020.39 = 24,520.98 : x
  2. Step 2: Convert to fraction form
    80,676/121,020.39 = 24,520.98/x
  3. Step 3: Cross multiply
    80,676x = 121,020.39 × 24,520.98
  4. Step 4: Simplify right side
    80,676x = 2,967,538,562.78
  5. Step 5: Solve for x
    x = 2,967,538,562.78/80,676
  6. Step 6: Final answer
    x = 36,783.41

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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.