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Finding the Fourth Proportional to 33,636.72, 50,399.72 and 20,449.20

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Solution

The fourth proportional to 33,636.72, 50,399.72 and 20,449.20 is: 30,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,636.72 : 50,399.72 = 20,449.20 : x
  2. Step 2: Convert to fraction form
    33,636.72/50,399.72 = 20,449.20/x
  3. Step 3: Cross multiply
    33,636.72x = 50,399.72 × 20,449.20
  4. Step 4: Simplify right side
    33,636.72x = 1,030,633,954.22
  5. Step 5: Solve for x
    x = 1,030,633,954.22/33,636.72
  6. Step 6: Final answer
    x = 30,640.14

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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.