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Finding the Third Proportional to 16,878.38 and 36,310.78

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Solution

The third proportional to 16,878.38 and 36,310.78 is: 78,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,878.38 : 36,310.78 = 36,310.78 : x
  2. Step 2: Convert to fraction form
    16,878.38/36,310.78 = 36,310.78/x
  3. Step 3: Cross multiply
    16,878.38x = 36,310.78 × 36,310.78
  4. Step 4: Simplify right side
    16,878.38x = 1,318,472,834.99
  5. Step 5: Solve for x
    x = 1,318,472,834.99/16,878.38
  6. Step 6: Final answer
    x = 78,116.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.