Home / 87,861.86-121,258.05-50,141.78

Finding the Fourth Proportional to 87,861.86, 121,258.05 and 50,141.78

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Solution

The fourth proportional to 87,861.86, 121,258.05 and 50,141.78 is: 69,200.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.86 : 121,258.05 = 50,141.78 : x
  2. Step 2: Convert to fraction form
    87,861.86/121,258.05 = 50,141.78/x
  3. Step 3: Cross multiply
    87,861.86x = 121,258.05 × 50,141.78
  4. Step 4: Simplify right side
    87,861.86x = 6,080,094,466.33
  5. Step 5: Solve for x
    x = 6,080,094,466.33/87,861.86
  6. Step 6: Final answer
    x = 69,200.61

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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.