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Finding the Fourth Proportional to 80,641.89, 120,980.97 and 27,330.84

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Solution

The fourth proportional to 80,641.89, 120,980.97 and 27,330.84 is: 41,002.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,641.89 : 120,980.97 = 27,330.84 : x
  2. Step 2: Convert to fraction form
    80,641.89/120,980.97 = 27,330.84/x
  3. Step 3: Cross multiply
    80,641.89x = 120,980.97 × 27,330.84
  4. Step 4: Simplify right side
    80,641.89x = 3,306,511,534.11
  5. Step 5: Solve for x
    x = 3,306,511,534.11/80,641.89
  6. Step 6: Final answer
    x = 41,002.41

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1.5x scale

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.