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Finding the Fourth Proportional to 80,773.40, 121,184.40 and 43,351.40

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Solution

The fourth proportional to 80,773.40, 121,184.40 and 43,351.40 is: 65,040.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,773.40 : 121,184.40 = 43,351.40 : x
  2. Step 2: Convert to fraction form
    80,773.40/121,184.40 = 43,351.40/x
  3. Step 3: Cross multiply
    80,773.40x = 121,184.40 × 43,351.40
  4. Step 4: Simplify right side
    80,773.40x = 5,253,513,398.16
  5. Step 5: Solve for x
    x = 5,253,513,398.16/80,773.40
  6. Step 6: Final answer
    x = 65,040.14

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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.