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Finding the Third Proportional to 15,690,517 and 36,640,021

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Solution

The third proportional to 15,690,517 and 36,640,021 is: 85,560,669.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690,517 : 36,640,021 = 36,640,021 : x
  2. Step 2: Convert to fraction form
    15,690,517/36,640,021 = 36,640,021/x
  3. Step 3: Cross multiply
    15,690,517x = 36,640,021 × 36,640,021
  4. Step 4: Simplify right side
    15,690,517x = 1,342,491,138,880,441
  5. Step 5: Solve for x
    x = 1,342,491,138,880,441/15,690,517
  6. Step 6: Final answer
    x = 85,560,669.47

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.