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Finding the Fourth Proportional to 80,398.82, 120,602.96 and 27,086.38

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Solution

The fourth proportional to 80,398.82, 120,602.96 and 27,086.38 is: 40,631.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,398.82 : 120,602.96 = 27,086.38 : x
  2. Step 2: Convert to fraction form
    80,398.82/120,602.96 = 27,086.38/x
  3. Step 3: Cross multiply
    80,398.82x = 120,602.96 × 27,086.38
  4. Step 4: Simplify right side
    80,398.82x = 3,266,697,603.68
  5. Step 5: Solve for x
    x = 3,266,697,603.68/80,398.82
  6. Step 6: Final answer
    x = 40,631.16

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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.