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Finding the Third Proportional to 18,722.25 and 40,266

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Solution

The third proportional to 18,722.25 and 40,266 is: 86,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.25 : 40,266 = 40,266 : x
  2. Step 2: Convert to fraction form
    18,722.25/40,266 = 40,266/x
  3. Step 3: Cross multiply
    18,722.25x = 40,266 × 40,266
  4. Step 4: Simplify right side
    18,722.25x = 1,621,350,756
  5. Step 5: Solve for x
    x = 1,621,350,756/18,722.25
  6. Step 6: Final answer
    x = 86,600.21

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.