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Finding the Fourth Proportional to 33,960.80, 50,979.60 and 20,117.60

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Solution

The fourth proportional to 33,960.80, 50,979.60 and 20,117.60 is: 30,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,960.80 : 50,979.60 = 20,117.60 : x
  2. Step 2: Convert to fraction form
    33,960.80/50,979.60 = 20,117.60/x
  3. Step 3: Cross multiply
    33,960.80x = 50,979.60 × 20,117.60
  4. Step 4: Simplify right side
    33,960.80x = 1,025,587,200.96
  5. Step 5: Solve for x
    x = 1,025,587,200.96/33,960.80
  6. Step 6: Final answer
    x = 30,199.15

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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.