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Finding the Fourth Proportional to 67,074.26, 100,479.92 and 38,935.31

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Solution

The fourth proportional to 67,074.26, 100,479.92 and 38,935.31 is: 58,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,074.26 : 100,479.92 = 38,935.31 : x
  2. Step 2: Convert to fraction form
    67,074.26/100,479.92 = 38,935.31/x
  3. Step 3: Cross multiply
    67,074.26x = 100,479.92 × 38,935.31
  4. Step 4: Simplify right side
    67,074.26x = 3,912,216,136.90
  5. Step 5: Solve for x
    x = 3,912,216,136.90/67,074.26
  6. Step 6: Final answer
    x = 58,326.64

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1.5x scale

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.