Home / 87,729.07-121,067.34-49,490.39

Finding the Fourth Proportional to 87,729.07, 121,067.34 and 49,490.39

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Solution

The fourth proportional to 87,729.07, 121,067.34 and 49,490.39 is: 68,297.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,729.07 : 121,067.34 = 49,490.39 : x
  2. Step 2: Convert to fraction form
    87,729.07/121,067.34 = 49,490.39/x
  3. Step 3: Cross multiply
    87,729.07x = 121,067.34 × 49,490.39
  4. Step 4: Simplify right side
    87,729.07x = 5,991,669,570.19
  5. Step 5: Solve for x
    x = 5,991,669,570.19/87,729.07
  6. Step 6: Final answer
    x = 68,297.42

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1.5x scale

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.