Home / 81,245.50-121,879.91-25,090.41

Finding the Fourth Proportional to 81,245.50, 121,879.91 and 25,090.41

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Solution

The fourth proportional to 81,245.50, 121,879.91 and 25,090.41 is: 37,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,245.50 : 121,879.91 = 25,090.41 : x
  2. Step 2: Convert to fraction form
    81,245.50/121,879.91 = 25,090.41/x
  3. Step 3: Cross multiply
    81,245.50x = 121,879.91 × 25,090.41
  4. Step 4: Simplify right side
    81,245.50x = 3,058,016,912.66
  5. Step 5: Solve for x
    x = 3,058,016,912.66/81,245.50
  6. Step 6: Final answer
    x = 37,639.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.