Home / 87,412,859.97-120,629,133.09-47,720,390.71

Finding the Fourth Proportional to 87,412,859.97, 120,629,133.09 and 47,720,390.71

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Solution

The fourth proportional to 87,412,859.97, 120,629,133.09 and 47,720,390.71 is: 65,853,804.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,412,859.97 : 120,629,133.09 = 47,720,390.71 : x
  2. Step 2: Convert to fraction form
    87,412,859.97/120,629,133.09 = 47,720,390.71/x
  3. Step 3: Cross multiply
    87,412,859.97x = 120,629,133.09 × 47,720,390.71
  4. Step 4: Simplify right side
    87,412,859.97x = 5,756,469,361,761,817
  5. Step 5: Solve for x
    x = 5,756,469,361,761,817/87,412,859.97
  6. Step 6: Final answer
    x = 65,853,804.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.