Home / 39,121.20-54,011.34-30,150.72

Finding the Fourth Proportional to 39,121.20, 54,011.34 and 30,150.72

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Solution

The fourth proportional to 39,121.20, 54,011.34 and 30,150.72 is: 41,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,121.20 : 54,011.34 = 30,150.72 : x
  2. Step 2: Convert to fraction form
    39,121.20/54,011.34 = 30,150.72/x
  3. Step 3: Cross multiply
    39,121.20x = 54,011.34 × 30,150.72
  4. Step 4: Simplify right side
    39,121.20x = 1,628,480,789.16
  5. Step 5: Solve for x
    x = 1,628,480,789.16/39,121.20
  6. Step 6: Final answer
    x = 41,626.56

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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.