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Finding the Third Proportional to 8,787,690 and 18,520,164

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Solution

The third proportional to 8,787,690 and 18,520,164 is: 39,031,471.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787,690 : 18,520,164 = 18,520,164 : x
  2. Step 2: Convert to fraction form
    8,787,690/18,520,164 = 18,520,164/x
  3. Step 3: Cross multiply
    8,787,690x = 18,520,164 × 18,520,164
  4. Step 4: Simplify right side
    8,787,690x = 342,996,474,586,896
  5. Step 5: Solve for x
    x = 342,996,474,586,896/8,787,690
  6. Step 6: Final answer
    x = 39,031,471.82

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.