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Finding the Third Proportional to 51,666 and 79,836

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Solution

The third proportional to 51,666 and 79,836 is: 123,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,666 : 79,836 = 79,836 : x
  2. Step 2: Convert to fraction form
    51,666/79,836 = 79,836/x
  3. Step 3: Cross multiply
    51,666x = 79,836 × 79,836
  4. Step 4: Simplify right side
    51,666x = 6,373,786,896
  5. Step 5: Solve for x
    x = 6,373,786,896/51,666
  6. Step 6: Final answer
    x = 123,365.21

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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.