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Finding the Third Proportional to 18,988,189 and 40,807,450

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Solution

The third proportional to 18,988,189 and 40,807,450 is: 87,699,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988,189 : 40,807,450 = 40,807,450 : x
  2. Step 2: Convert to fraction form
    18,988,189/40,807,450 = 40,807,450/x
  3. Step 3: Cross multiply
    18,988,189x = 40,807,450 × 40,807,450
  4. Step 4: Simplify right side
    18,988,189x = 1,665,247,975,502,500
  5. Step 5: Solve for x
    x = 1,665,247,975,502,500/18,988,189
  6. Step 6: Final answer
    x = 87,699,146.85

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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.