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Finding the Third Proportional to 26,987 and 40,857

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Solution

The third proportional to 26,987 and 40,857 is: 61,855.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,987 : 40,857 = 40,857 : x
  2. Step 2: Convert to fraction form
    26,987/40,857 = 40,857/x
  3. Step 3: Cross multiply
    26,987x = 40,857 × 40,857
  4. Step 4: Simplify right side
    26,987x = 1,669,294,449
  5. Step 5: Solve for x
    x = 1,669,294,449/26,987
  6. Step 6: Final answer
    x = 61,855.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.