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Finding the Third Proportional to 45,731 and 68,718

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Solution

The third proportional to 45,731 and 68,718 is: 103,259.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,731 : 68,718 = 68,718 : x
  2. Step 2: Convert to fraction form
    45,731/68,718 = 68,718/x
  3. Step 3: Cross multiply
    45,731x = 68,718 × 68,718
  4. Step 4: Simplify right side
    45,731x = 4,722,163,524
  5. Step 5: Solve for x
    x = 4,722,163,524/45,731
  6. Step 6: Final answer
    x = 103,259.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.