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Finding the Third Proportional to 43,272 and 65,718

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Solution

The third proportional to 43,272 and 65,718 is: 99,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,272 : 65,718 = 65,718 : x
  2. Step 2: Convert to fraction form
    43,272/65,718 = 65,718/x
  3. Step 3: Cross multiply
    43,272x = 65,718 × 65,718
  4. Step 4: Simplify right side
    43,272x = 4,318,855,524
  5. Step 5: Solve for x
    x = 4,318,855,524/43,272
  6. Step 6: Final answer
    x = 99,807.16

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.