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Finding the Third Proportional to 18,981,520 and 29,415,912

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Solution

The third proportional to 18,981,520 and 29,415,912 is: 45,586,226.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,520 : 29,415,912 = 29,415,912 : x
  2. Step 2: Convert to fraction form
    18,981,520/29,415,912 = 29,415,912/x
  3. Step 3: Cross multiply
    18,981,520x = 29,415,912 × 29,415,912
  4. Step 4: Simplify right side
    18,981,520x = 865,295,878,791,744
  5. Step 5: Solve for x
    x = 865,295,878,791,744/18,981,520
  6. Step 6: Final answer
    x = 45,586,226.96

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.