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Finding the Third Proportional to 18,638,212 and 39,867,144

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Solution

The third proportional to 18,638,212 and 39,867,144 is: 85,275,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638,212 : 39,867,144 = 39,867,144 : x
  2. Step 2: Convert to fraction form
    18,638,212/39,867,144 = 39,867,144/x
  3. Step 3: Cross multiply
    18,638,212x = 39,867,144 × 39,867,144
  4. Step 4: Simplify right side
    18,638,212x = 1,589,389,170,716,736
  5. Step 5: Solve for x
    x = 1,589,389,170,716,736/18,638,212
  6. Step 6: Final answer
    x = 85,275,839.27

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.