Home / 71,135.91-98,169.55-39,306.87

Finding the Fourth Proportional to 71,135.91, 98,169.55 and 39,306.87

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Solution

The fourth proportional to 71,135.91, 98,169.55 and 39,306.87 is: 54,244.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,135.91 : 98,169.55 = 39,306.87 : x
  2. Step 2: Convert to fraction form
    71,135.91/98,169.55 = 39,306.87/x
  3. Step 3: Cross multiply
    71,135.91x = 98,169.55 × 39,306.87
  4. Step 4: Simplify right side
    71,135.91x = 3,858,737,641.54
  5. Step 5: Solve for x
    x = 3,858,737,641.54/71,135.91
  6. Step 6: Final answer
    x = 54,244.58

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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.