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Finding the Third Proportional to 18,528,072 and 40,245,678

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Solution

The third proportional to 18,528,072 and 40,245,678 is: 87,419,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,528,072 : 40,245,678 = 40,245,678 : x
  2. Step 2: Convert to fraction form
    18,528,072/40,245,678 = 40,245,678/x
  3. Step 3: Cross multiply
    18,528,072x = 40,245,678 × 40,245,678
  4. Step 4: Simplify right side
    18,528,072x = 1,619,714,597,679,684
  5. Step 5: Solve for x
    x = 1,619,714,597,679,684/18,528,072
  6. Step 6: Final answer
    x = 87,419,489.61

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.