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Finding the Third Proportional to 3,987,063.75 and 8,695,743

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Solution

The third proportional to 3,987,063.75 and 8,695,743 is: 18,965,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,063.75 : 8,695,743 = 8,695,743 : x
  2. Step 2: Convert to fraction form
    3,987,063.75/8,695,743 = 8,695,743/x
  3. Step 3: Cross multiply
    3,987,063.75x = 8,695,743 × 8,695,743
  4. Step 4: Simplify right side
    3,987,063.75x = 75,615,946,322,049
  5. Step 5: Solve for x
    x = 75,615,946,322,049/3,987,063.75
  6. Step 6: Final answer
    x = 18,965,321.62

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.