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Finding the Third Proportional to 47,391 and 102,372

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Solution

The third proportional to 47,391 and 102,372 is: 221,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,391 : 102,372 = 102,372 : x
  2. Step 2: Convert to fraction form
    47,391/102,372 = 102,372/x
  3. Step 3: Cross multiply
    47,391x = 102,372 × 102,372
  4. Step 4: Simplify right side
    47,391x = 10,480,026,384
  5. Step 5: Solve for x
    x = 10,480,026,384/47,391
  6. Step 6: Final answer
    x = 221,139.59

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.