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Finding the Third Proportional to 51,881 and 79,326

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Solution

The third proportional to 51,881 and 79,326 is: 121,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,881 : 79,326 = 79,326 : x
  2. Step 2: Convert to fraction form
    51,881/79,326 = 79,326/x
  3. Step 3: Cross multiply
    51,881x = 79,326 × 79,326
  4. Step 4: Simplify right side
    51,881x = 6,292,614,276
  5. Step 5: Solve for x
    x = 6,292,614,276/51,881
  6. Step 6: Final answer
    x = 121,289.38

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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.