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Finding the Fourth Proportional to 80,018.68, 120,042.60 and 27,433.48

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Solution

The fourth proportional to 80,018.68, 120,042.60 and 27,433.48 is: 41,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,018.68 : 120,042.60 = 27,433.48 : x
  2. Step 2: Convert to fraction form
    80,018.68/120,042.60 = 27,433.48/x
  3. Step 3: Cross multiply
    80,018.68x = 120,042.60 × 27,433.48
  4. Step 4: Simplify right side
    80,018.68x = 3,293,186,266.25
  5. Step 5: Solve for x
    x = 3,293,186,266.25/80,018.68
  6. Step 6: Final answer
    x = 41,155.22

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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.