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Finding the Third Proportional to 18,141,939 and 39,169,909

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Solution

The third proportional to 18,141,939 and 39,169,909 is: 84,570,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141,939 : 39,169,909 = 39,169,909 : x
  2. Step 2: Convert to fraction form
    18,141,939/39,169,909 = 39,169,909/x
  3. Step 3: Cross multiply
    18,141,939x = 39,169,909 × 39,169,909
  4. Step 4: Simplify right side
    18,141,939x = 1,534,281,771,068,281
  5. Step 5: Solve for x
    x = 1,534,281,771,068,281/18,141,939
  6. Step 6: Final answer
    x = 84,570,991.62

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.