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Finding the Third Proportional to 28,272 and 61,200

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Solution

The third proportional to 28,272 and 61,200 is: 132,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272 : 61,200 = 61,200 : x
  2. Step 2: Convert to fraction form
    28,272/61,200 = 61,200/x
  3. Step 3: Cross multiply
    28,272x = 61,200 × 61,200
  4. Step 4: Simplify right side
    28,272x = 3,745,440,000
  5. Step 5: Solve for x
    x = 3,745,440,000/28,272
  6. Step 6: Final answer
    x = 132,478.78

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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.