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Finding the Third Proportional to 15,720,876 and 34,374,380

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Solution

The third proportional to 15,720,876 and 34,374,380 is: 75,161,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720,876 : 34,374,380 = 34,374,380 : x
  2. Step 2: Convert to fraction form
    15,720,876/34,374,380 = 34,374,380/x
  3. Step 3: Cross multiply
    15,720,876x = 34,374,380 × 34,374,380
  4. Step 4: Simplify right side
    15,720,876x = 1,181,598,000,384,400
  5. Step 5: Solve for x
    x = 1,181,598,000,384,400/15,720,876
  6. Step 6: Final answer
    x = 75,161,078.83

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.