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Finding the Third Proportional to 28,940 and 63,419

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Solution

The third proportional to 28,940 and 63,419 is: 138,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940 : 63,419 = 63,419 : x
  2. Step 2: Convert to fraction form
    28,940/63,419 = 63,419/x
  3. Step 3: Cross multiply
    28,940x = 63,419 × 63,419
  4. Step 4: Simplify right side
    28,940x = 4,021,969,561
  5. Step 5: Solve for x
    x = 4,021,969,561/28,940
  6. Step 6: Final answer
    x = 138,976.14

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.