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Finding the Third Proportional to 51,612 and 79,766

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Solution

The third proportional to 51,612 and 79,766 is: 123,277.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,612 : 79,766 = 79,766 : x
  2. Step 2: Convert to fraction form
    51,612/79,766 = 79,766/x
  3. Step 3: Cross multiply
    51,612x = 79,766 × 79,766
  4. Step 4: Simplify right side
    51,612x = 6,362,614,756
  5. Step 5: Solve for x
    x = 6,362,614,756/51,612
  6. Step 6: Final answer
    x = 123,277.82

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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.