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Finding the Third Proportional to 18,321,855 and 39,800,766

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Solution

The third proportional to 18,321,855 and 39,800,766 is: 86,459,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321,855 : 39,800,766 = 39,800,766 : x
  2. Step 2: Convert to fraction form
    18,321,855/39,800,766 = 39,800,766/x
  3. Step 3: Cross multiply
    18,321,855x = 39,800,766 × 39,800,766
  4. Step 4: Simplify right side
    18,321,855x = 1,584,100,974,186,756
  5. Step 5: Solve for x
    x = 1,584,100,974,186,756/18,321,855
  6. Step 6: Final answer
    x = 86,459,639.28

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.