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Finding the Third Proportional to 21,631 and 47,959

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Solution

The third proportional to 21,631 and 47,959 is: 106,331.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631 : 47,959 = 47,959 : x
  2. Step 2: Convert to fraction form
    21,631/47,959 = 47,959/x
  3. Step 3: Cross multiply
    21,631x = 47,959 × 47,959
  4. Step 4: Simplify right side
    21,631x = 2,300,065,681
  5. Step 5: Solve for x
    x = 2,300,065,681/21,631
  6. Step 6: Final answer
    x = 106,331.92

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.