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Finding the Third Proportional to 18,839,447 and 40,404,742

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Solution

The third proportional to 18,839,447 and 40,404,742 is: 86,655,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839,447 : 40,404,742 = 40,404,742 : x
  2. Step 2: Convert to fraction form
    18,839,447/40,404,742 = 40,404,742/x
  3. Step 3: Cross multiply
    18,839,447x = 40,404,742 × 40,404,742
  4. Step 4: Simplify right side
    18,839,447x = 1,632,543,176,086,564
  5. Step 5: Solve for x
    x = 1,632,543,176,086,564/18,839,447
  6. Step 6: Final answer
    x = 86,655,578.38

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.