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Finding the Third Proportional to 18,139,628.25 and 39,467,781

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Solution

The third proportional to 18,139,628.25 and 39,467,781 is: 85,873,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,628.25 : 39,467,781 = 39,467,781 : x
  2. Step 2: Convert to fraction form
    18,139,628.25/39,467,781 = 39,467,781/x
  3. Step 3: Cross multiply
    18,139,628.25x = 39,467,781 × 39,467,781
  4. Step 4: Simplify right side
    18,139,628.25x = 1,557,705,737,063,961
  5. Step 5: Solve for x
    x = 1,557,705,737,063,961/18,139,628.25
  6. Step 6: Final answer
    x = 85,873,079.40

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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.