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Finding the Third Proportional to 47,728 and 107,831

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Solution

The third proportional to 47,728 and 107,831 is: 243,620.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,728 : 107,831 = 107,831 : x
  2. Step 2: Convert to fraction form
    47,728/107,831 = 107,831/x
  3. Step 3: Cross multiply
    47,728x = 107,831 × 107,831
  4. Step 4: Simplify right side
    47,728x = 11,627,524,561
  5. Step 5: Solve for x
    x = 11,627,524,561/47,728
  6. Step 6: Final answer
    x = 243,620.61

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.