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Finding the Third Proportional to 38,272 and 51,330

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Solution

The third proportional to 38,272 and 51,330 is: 68,843.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,272 : 51,330 = 51,330 : x
  2. Step 2: Convert to fraction form
    38,272/51,330 = 51,330/x
  3. Step 3: Cross multiply
    38,272x = 51,330 × 51,330
  4. Step 4: Simplify right side
    38,272x = 2,634,768,900
  5. Step 5: Solve for x
    x = 2,634,768,900/38,272
  6. Step 6: Final answer
    x = 68,843.25

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.