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Finding the Third Proportional to 17,992,390 and 39,179,420

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Solution

The third proportional to 17,992,390 and 39,179,420 is: 85,315,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,992,390 : 39,179,420 = 39,179,420 : x
  2. Step 2: Convert to fraction form
    17,992,390/39,179,420 = 39,179,420/x
  3. Step 3: Cross multiply
    17,992,390x = 39,179,420 × 39,179,420
  4. Step 4: Simplify right side
    17,992,390x = 1,535,026,951,536,400
  5. Step 5: Solve for x
    x = 1,535,026,951,536,400/17,992,390
  6. Step 6: Final answer
    x = 85,315,344.52

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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.