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Finding the Third Proportional to 18,486,419 and 39,895,724

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Solution

The third proportional to 18,486,419 and 39,895,724 is: 86,099,357.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486,419 : 39,895,724 = 39,895,724 : x
  2. Step 2: Convert to fraction form
    18,486,419/39,895,724 = 39,895,724/x
  3. Step 3: Cross multiply
    18,486,419x = 39,895,724 × 39,895,724
  4. Step 4: Simplify right side
    18,486,419x = 1,591,668,793,484,176
  5. Step 5: Solve for x
    x = 1,591,668,793,484,176/18,486,419
  6. Step 6: Final answer
    x = 86,099,357.24

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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.