Home / 87,858.86-121,253.92-50,138.78

Finding the Fourth Proportional to 87,858.86, 121,253.92 and 50,138.78

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Solution

The fourth proportional to 87,858.86, 121,253.92 and 50,138.78 is: 69,196.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858.86 : 121,253.92 = 50,138.78 : x
  2. Step 2: Convert to fraction form
    87,858.86/121,253.92 = 50,138.78/x
  3. Step 3: Cross multiply
    87,858.86x = 121,253.92 × 50,138.78
  4. Step 4: Simplify right side
    87,858.86x = 6,079,523,619.02
  5. Step 5: Solve for x
    x = 6,079,523,619.02/87,858.86
  6. Step 6: Final answer
    x = 69,196.48

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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.