Home / 71,187.28-98,229.90-39,351.82

Finding the Fourth Proportional to 71,187.28, 98,229.90 and 39,351.82

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Solution

The fourth proportional to 71,187.28, 98,229.90 and 39,351.82 is: 54,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,187.28 : 98,229.90 = 39,351.82 : x
  2. Step 2: Convert to fraction form
    71,187.28/98,229.90 = 39,351.82/x
  3. Step 3: Cross multiply
    71,187.28x = 98,229.90 × 39,351.82
  4. Step 4: Simplify right side
    71,187.28x = 3,865,525,343.42
  5. Step 5: Solve for x
    x = 3,865,525,343.42/71,187.28
  6. Step 6: Final answer
    x = 54,300.79

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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.