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Finding the Third Proportional to 38,600 and 81,936

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Solution

The third proportional to 38,600 and 81,936 is: 173,925.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,600 : 81,936 = 81,936 : x
  2. Step 2: Convert to fraction form
    38,600/81,936 = 81,936/x
  3. Step 3: Cross multiply
    38,600x = 81,936 × 81,936
  4. Step 4: Simplify right side
    38,600x = 6,713,508,096
  5. Step 5: Solve for x
    x = 6,713,508,096/38,600
  6. Step 6: Final answer
    x = 173,925.08

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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.