Home / 71,231.20-98,299.92-39,399.28

Finding the Fourth Proportional to 71,231.20, 98,299.92 and 39,399.28

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Solution

The fourth proportional to 71,231.20, 98,299.92 and 39,399.28 is: 54,371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,231.20 : 98,299.92 = 39,399.28 : x
  2. Step 2: Convert to fraction form
    71,231.20/98,299.92 = 39,399.28/x
  3. Step 3: Cross multiply
    71,231.20x = 98,299.92 × 39,399.28
  4. Step 4: Simplify right side
    71,231.20x = 3,872,946,072.06
  5. Step 5: Solve for x
    x = 3,872,946,072.06/71,231.20
  6. Step 6: Final answer
    x = 54,371.48

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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.