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Finding the Fourth Proportional to 80,436.64, 120,654.99 and 27,817.42

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Solution

The fourth proportional to 80,436.64, 120,654.99 and 27,817.42 is: 41,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,436.64 : 120,654.99 = 27,817.42 : x
  2. Step 2: Convert to fraction form
    80,436.64/120,654.99 = 27,817.42/x
  3. Step 3: Cross multiply
    80,436.64x = 120,654.99 × 27,817.42
  4. Step 4: Simplify right side
    80,436.64x = 3,356,310,531.93
  5. Step 5: Solve for x
    x = 3,356,310,531.93/80,436.64
  6. Step 6: Final answer
    x = 41,726.14

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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.