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Finding the Third Proportional to 32,728 and 68,372

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Solution

The third proportional to 32,728 and 68,372 is: 142,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,728 : 68,372 = 68,372 : x
  2. Step 2: Convert to fraction form
    32,728/68,372 = 68,372/x
  3. Step 3: Cross multiply
    32,728x = 68,372 × 68,372
  4. Step 4: Simplify right side
    32,728x = 4,674,730,384
  5. Step 5: Solve for x
    x = 4,674,730,384/32,728
  6. Step 6: Final answer
    x = 142,835.81

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.