Home / 71,101.28-98,120.32-39,270.70

Finding the Fourth Proportional to 71,101.28, 98,120.32 and 39,270.70

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Solution

The fourth proportional to 71,101.28, 98,120.32 and 39,270.70 is: 54,193.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,101.28 : 98,120.32 = 39,270.70 : x
  2. Step 2: Convert to fraction form
    71,101.28/98,120.32 = 39,270.70/x
  3. Step 3: Cross multiply
    71,101.28x = 98,120.32 × 39,270.70
  4. Step 4: Simplify right side
    71,101.28x = 3,853,253,650.62
  5. Step 5: Solve for x
    x = 3,853,253,650.62/71,101.28
  6. Step 6: Final answer
    x = 54,193.87

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1.5x scale

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.