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Finding the Fourth Proportional to 80,521.66, 120,752.25 and 27,918.46

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Solution

The fourth proportional to 80,521.66, 120,752.25 and 27,918.46 is: 41,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,521.66 : 120,752.25 = 27,918.46 : x
  2. Step 2: Convert to fraction form
    80,521.66/120,752.25 = 27,918.46/x
  3. Step 3: Cross multiply
    80,521.66x = 120,752.25 × 27,918.46
  4. Step 4: Simplify right side
    80,521.66x = 3,371,216,861.54
  5. Step 5: Solve for x
    x = 3,371,216,861.54/80,521.66
  6. Step 6: Final answer
    x = 41,867.21

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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.