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Finding the Third Proportional to 18,863,889 and 38,421,438

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Solution

The third proportional to 18,863,889 and 38,421,438 is: 78,255,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863,889 : 38,421,438 = 38,421,438 : x
  2. Step 2: Convert to fraction form
    18,863,889/38,421,438 = 38,421,438/x
  3. Step 3: Cross multiply
    18,863,889x = 38,421,438 × 38,421,438
  4. Step 4: Simplify right side
    18,863,889x = 1,476,206,897,987,844
  5. Step 5: Solve for x
    x = 1,476,206,897,987,844/18,863,889
  6. Step 6: Final answer
    x = 78,255,703.16

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.