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Finding the Fourth Proportional to 70,286.40, 105,375.60 and 35,251.20

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Solution

The fourth proportional to 70,286.40, 105,375.60 and 35,251.20 is: 52,849.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,286.40 : 105,375.60 = 35,251.20 : x
  2. Step 2: Convert to fraction form
    70,286.40/105,375.60 = 35,251.20/x
  3. Step 3: Cross multiply
    70,286.40x = 105,375.60 × 35,251.20
  4. Step 4: Simplify right side
    70,286.40x = 3,714,616,350.72
  5. Step 5: Solve for x
    x = 3,714,616,350.72/70,286.40
  6. Step 6: Final answer
    x = 52,849.72

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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.