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Finding the Third Proportional to 38,728 and 57,938

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Solution

The third proportional to 38,728 and 57,938 is: 86,676.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,728 : 57,938 = 57,938 : x
  2. Step 2: Convert to fraction form
    38,728/57,938 = 57,938/x
  3. Step 3: Cross multiply
    38,728x = 57,938 × 57,938
  4. Step 4: Simplify right side
    38,728x = 3,356,811,844
  5. Step 5: Solve for x
    x = 3,356,811,844/38,728
  6. Step 6: Final answer
    x = 86,676.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.