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Finding the Third Proportional to 18,597,728 and 40,131,320

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Solution

The third proportional to 18,597,728 and 40,131,320 is: 86,597,827.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597,728 : 40,131,320 = 40,131,320 : x
  2. Step 2: Convert to fraction form
    18,597,728/40,131,320 = 40,131,320/x
  3. Step 3: Cross multiply
    18,597,728x = 40,131,320 × 40,131,320
  4. Step 4: Simplify right side
    18,597,728x = 1,610,522,844,942,400
  5. Step 5: Solve for x
    x = 1,610,522,844,942,400/18,597,728
  6. Step 6: Final answer
    x = 86,597,827.70

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.