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Finding the Fourth Proportional to 70,843.28, 106,276.46 and 20,928.42

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Solution

The fourth proportional to 70,843.28, 106,276.46 and 20,928.42 is: 31,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,843.28 : 106,276.46 = 20,928.42 : x
  2. Step 2: Convert to fraction form
    70,843.28/106,276.46 = 20,928.42/x
  3. Step 3: Cross multiply
    70,843.28x = 106,276.46 × 20,928.42
  4. Step 4: Simplify right side
    70,843.28x = 2,224,198,286.35
  5. Step 5: Solve for x
    x = 2,224,198,286.35/70,843.28
  6. Step 6: Final answer
    x = 31,396.04

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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.