Home / 87,858.36-121,253.22-50,138.28

Finding the Fourth Proportional to 87,858.36, 121,253.22 and 50,138.28

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Solution

The fourth proportional to 87,858.36, 121,253.22 and 50,138.28 is: 69,195.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858.36 : 121,253.22 = 50,138.28 : x
  2. Step 2: Convert to fraction form
    87,858.36/121,253.22 = 50,138.28/x
  3. Step 3: Cross multiply
    87,858.36x = 121,253.22 × 50,138.28
  4. Step 4: Simplify right side
    87,858.36x = 6,079,427,895.26
  5. Step 5: Solve for x
    x = 6,079,427,895.26/87,858.36
  6. Step 6: Final answer
    x = 69,195.78

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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.