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Finding the Third Proportional to 18,186,738 and 39,400,554

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Solution

The third proportional to 18,186,738 and 39,400,554 is: 85,359,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,186,738 : 39,400,554 = 39,400,554 : x
  2. Step 2: Convert to fraction form
    18,186,738/39,400,554 = 39,400,554/x
  3. Step 3: Cross multiply
    18,186,738x = 39,400,554 × 39,400,554
  4. Step 4: Simplify right side
    18,186,738x = 1,552,403,655,506,916
  5. Step 5: Solve for x
    x = 1,552,403,655,506,916/18,186,738
  6. Step 6: Final answer
    x = 85,359,103.73

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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.