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Finding the Fourth Proportional to 33,403.80, 50,105.70 and 30,390.60

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Solution

The fourth proportional to 33,403.80, 50,105.70 and 30,390.60 is: 45,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,403.80 : 50,105.70 = 30,390.60 : x
  2. Step 2: Convert to fraction form
    33,403.80/50,105.70 = 30,390.60/x
  3. Step 3: Cross multiply
    33,403.80x = 50,105.70 × 30,390.60
  4. Step 4: Simplify right side
    33,403.80x = 1,522,742,286.42
  5. Step 5: Solve for x
    x = 1,522,742,286.42/33,403.80
  6. Step 6: Final answer
    x = 45,585.90

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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.