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Finding the Third Proportional to 20,410.50 and 31,539

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Solution

The third proportional to 20,410.50 and 31,539 is: 48,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.50 : 31,539 = 31,539 : x
  2. Step 2: Convert to fraction form
    20,410.50/31,539 = 31,539/x
  3. Step 3: Cross multiply
    20,410.50x = 31,539 × 31,539
  4. Step 4: Simplify right side
    20,410.50x = 994,708,521
  5. Step 5: Solve for x
    x = 994,708,521/20,410.50
  6. Step 6: Final answer
    x = 48,735.14

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.