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Finding the Third Proportional to 38,242 and 82,638

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Solution

The third proportional to 38,242 and 82,638 is: 178,574.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,242 : 82,638 = 82,638 : x
  2. Step 2: Convert to fraction form
    38,242/82,638 = 82,638/x
  3. Step 3: Cross multiply
    38,242x = 82,638 × 82,638
  4. Step 4: Simplify right side
    38,242x = 6,829,039,044
  5. Step 5: Solve for x
    x = 6,829,039,044/38,242
  6. Step 6: Final answer
    x = 178,574.32

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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.