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Finding the Third Proportional to 39,902 and 83,936

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Solution

The third proportional to 39,902 and 83,936 is: 176,563.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,902 : 83,936 = 83,936 : x
  2. Step 2: Convert to fraction form
    39,902/83,936 = 83,936/x
  3. Step 3: Cross multiply
    39,902x = 83,936 × 83,936
  4. Step 4: Simplify right side
    39,902x = 7,045,252,096
  5. Step 5: Solve for x
    x = 7,045,252,096/39,902
  6. Step 6: Final answer
    x = 176,563.88

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.