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Finding the Third Proportional to 18,685,438 and 40,164,404

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Solution

The third proportional to 18,685,438 and 40,164,404 is: 86,333,504.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,438 : 40,164,404 = 40,164,404 : x
  2. Step 2: Convert to fraction form
    18,685,438/40,164,404 = 40,164,404/x
  3. Step 3: Cross multiply
    18,685,438x = 40,164,404 × 40,164,404
  4. Step 4: Simplify right side
    18,685,438x = 1,613,179,348,675,216
  5. Step 5: Solve for x
    x = 1,613,179,348,675,216/18,685,438
  6. Step 6: Final answer
    x = 86,333,504.66

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.