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Finding the Fourth Proportional to 80,491.17, 120,725.13 and 27,173.48

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Solution

The fourth proportional to 80,491.17, 120,725.13 and 27,173.48 is: 40,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,491.17 : 120,725.13 = 27,173.48 : x
  2. Step 2: Convert to fraction form
    80,491.17/120,725.13 = 27,173.48/x
  3. Step 3: Cross multiply
    80,491.17x = 120,725.13 × 27,173.48
  4. Step 4: Simplify right side
    80,491.17x = 3,280,521,403.83
  5. Step 5: Solve for x
    x = 3,280,521,403.83/80,491.17
  6. Step 6: Final answer
    x = 40,756.29

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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.