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Finding the Third Proportional to 25,858 and 38,915

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Solution

The third proportional to 25,858 and 38,915 is: 58,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,858 : 38,915 = 38,915 : x
  2. Step 2: Convert to fraction form
    25,858/38,915 = 38,915/x
  3. Step 3: Cross multiply
    25,858x = 38,915 × 38,915
  4. Step 4: Simplify right side
    25,858x = 1,514,377,225
  5. Step 5: Solve for x
    x = 1,514,377,225/25,858
  6. Step 6: Final answer
    x = 58,565.13

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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.