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Finding the Third Proportional to 20,408 and 43,266

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Solution

The third proportional to 20,408 and 43,266 is: 91,726.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408 : 43,266 = 43,266 : x
  2. Step 2: Convert to fraction form
    20,408/43,266 = 43,266/x
  3. Step 3: Cross multiply
    20,408x = 43,266 × 43,266
  4. Step 4: Simplify right side
    20,408x = 1,871,946,756
  5. Step 5: Solve for x
    x = 1,871,946,756/20,408
  6. Step 6: Final answer
    x = 91,726.12

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.