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Finding the Third Proportional to 18,988,072 and 29,420,328

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Solution

The third proportional to 18,988,072 and 29,420,328 is: 45,584,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988,072 : 29,420,328 = 29,420,328 : x
  2. Step 2: Convert to fraction form
    18,988,072/29,420,328 = 29,420,328/x
  3. Step 3: Cross multiply
    18,988,072x = 29,420,328 × 29,420,328
  4. Step 4: Simplify right side
    18,988,072x = 865,555,699,627,584
  5. Step 5: Solve for x
    x = 865,555,699,627,584/18,988,072
  6. Step 6: Final answer
    x = 45,584,180.41

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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.