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Finding the Third Proportional to 18,672,320 and 40,201,600

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Solution

The third proportional to 18,672,320 and 40,201,600 is: 86,554,249.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672,320 : 40,201,600 = 40,201,600 : x
  2. Step 2: Convert to fraction form
    18,672,320/40,201,600 = 40,201,600/x
  3. Step 3: Cross multiply
    18,672,320x = 40,201,600 × 40,201,600
  4. Step 4: Simplify right side
    18,672,320x = 1,616,168,642,560,000
  5. Step 5: Solve for x
    x = 1,616,168,642,560,000/18,672,320
  6. Step 6: Final answer
    x = 86,554,249.42

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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.