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Finding the Third Proportional to 18,139,632 and 39,467,789

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Solution

The third proportional to 18,139,632 and 39,467,789 is: 85,873,096.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,632 : 39,467,789 = 39,467,789 : x
  2. Step 2: Convert to fraction form
    18,139,632/39,467,789 = 39,467,789/x
  3. Step 3: Cross multiply
    18,139,632x = 39,467,789 × 39,467,789
  4. Step 4: Simplify right side
    18,139,632x = 1,557,706,368,548,521
  5. Step 5: Solve for x
    x = 1,557,706,368,548,521/18,139,632
  6. Step 6: Final answer
    x = 85,873,096.46

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.