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Finding the Third Proportional to 38,418 and 79,500

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Solution

The third proportional to 38,418 and 79,500 is: 164,512.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,418 : 79,500 = 79,500 : x
  2. Step 2: Convert to fraction form
    38,418/79,500 = 79,500/x
  3. Step 3: Cross multiply
    38,418x = 79,500 × 79,500
  4. Step 4: Simplify right side
    38,418x = 6,320,250,000
  5. Step 5: Solve for x
    x = 6,320,250,000/38,418
  6. Step 6: Final answer
    x = 164,512.73

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.