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Finding the Third Proportional to 25,870 and 38,869

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Solution

The third proportional to 25,870 and 38,869 is: 58,399.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,870 : 38,869 = 38,869 : x
  2. Step 2: Convert to fraction form
    25,870/38,869 = 38,869/x
  3. Step 3: Cross multiply
    25,870x = 38,869 × 38,869
  4. Step 4: Simplify right side
    25,870x = 1,510,799,161
  5. Step 5: Solve for x
    x = 1,510,799,161/25,870
  6. Step 6: Final answer
    x = 58,399.66

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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.