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Finding the Third Proportional to 30,215 and 39,895

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Solution

The third proportional to 30,215 and 39,895 is: 52,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215 : 39,895 = 39,895 : x
  2. Step 2: Convert to fraction form
    30,215/39,895 = 39,895/x
  3. Step 3: Cross multiply
    30,215x = 39,895 × 39,895
  4. Step 4: Simplify right side
    30,215x = 1,591,611,025
  5. Step 5: Solve for x
    x = 1,591,611,025/30,215
  6. Step 6: Final answer
    x = 52,676.19

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.