Home / 80,251.36-120,311.36-30,303.12

Finding the Fourth Proportional to 80,251.36, 120,311.36 and 30,303.12

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Solution

The fourth proportional to 80,251.36, 120,311.36 and 30,303.12 is: 45,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,251.36 : 120,311.36 = 30,303.12 : x
  2. Step 2: Convert to fraction form
    80,251.36/120,311.36 = 30,303.12/x
  3. Step 3: Cross multiply
    80,251.36x = 120,311.36 × 30,303.12
  4. Step 4: Simplify right side
    80,251.36x = 3,645,809,579.44
  5. Step 5: Solve for x
    x = 3,645,809,579.44/80,251.36
  6. Step 6: Final answer
    x = 45,429.88

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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.