Home / 81,331.09-122,002.34-25,163.80

Finding the Fourth Proportional to 81,331.09, 122,002.34 and 25,163.80

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Solution

The fourth proportional to 81,331.09, 122,002.34 and 25,163.80 is: 37,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.09 : 122,002.34 = 25,163.80 : x
  2. Step 2: Convert to fraction form
    81,331.09/122,002.34 = 25,163.80/x
  3. Step 3: Cross multiply
    81,331.09x = 122,002.34 × 25,163.80
  4. Step 4: Simplify right side
    81,331.09x = 3,070,042,483.29
  5. Step 5: Solve for x
    x = 3,070,042,483.29/81,331.09
  6. Step 6: Final answer
    x = 37,747.47

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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.