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Finding the Third Proportional to 28,638 and 62,922

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Solution

The third proportional to 28,638 and 62,922 is: 138,249.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638 : 62,922 = 62,922 : x
  2. Step 2: Convert to fraction form
    28,638/62,922 = 62,922/x
  3. Step 3: Cross multiply
    28,638x = 62,922 × 62,922
  4. Step 4: Simplify right side
    28,638x = 3,959,178,084
  5. Step 5: Solve for x
    x = 3,959,178,084/28,638
  6. Step 6: Final answer
    x = 138,249.11

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.