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Finding the Third Proportional to 51,514 and 79,721.50

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Solution

The third proportional to 51,514 and 79,721.50 is: 123,374.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,514 : 79,721.50 = 79,721.50 : x
  2. Step 2: Convert to fraction form
    51,514/79,721.50 = 79,721.50/x
  3. Step 3: Cross multiply
    51,514x = 79,721.50 × 79,721.50
  4. Step 4: Simplify right side
    51,514x = 6,355,517,562.25
  5. Step 5: Solve for x
    x = 6,355,517,562.25/51,514
  6. Step 6: Final answer
    x = 123,374.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.