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Finding the Third Proportional to 15,625 and 34,381

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Solution

The third proportional to 15,625 and 34,381 is: 75,651.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625 : 34,381 = 34,381 : x
  2. Step 2: Convert to fraction form
    15,625/34,381 = 34,381/x
  3. Step 3: Cross multiply
    15,625x = 34,381 × 34,381
  4. Step 4: Simplify right side
    15,625x = 1,182,053,161
  5. Step 5: Solve for x
    x = 1,182,053,161/15,625
  6. Step 6: Final answer
    x = 75,651.40

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.