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Finding the Third Proportional to 51,644 and 78,952

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Solution

The third proportional to 51,644 and 78,952 is: 120,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,644 : 78,952 = 78,952 : x
  2. Step 2: Convert to fraction form
    51,644/78,952 = 78,952/x
  3. Step 3: Cross multiply
    51,644x = 78,952 × 78,952
  4. Step 4: Simplify right side
    51,644x = 6,233,418,304
  5. Step 5: Solve for x
    x = 6,233,418,304/51,644
  6. Step 6: Final answer
    x = 120,699.76

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.