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Finding the Fourth Proportional to 33,307.20, 49,960.80 and 20,185.20

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Solution

The fourth proportional to 33,307.20, 49,960.80 and 20,185.20 is: 30,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,307.20 : 49,960.80 = 20,185.20 : x
  2. Step 2: Convert to fraction form
    33,307.20/49,960.80 = 20,185.20/x
  3. Step 3: Cross multiply
    33,307.20x = 49,960.80 × 20,185.20
  4. Step 4: Simplify right side
    33,307.20x = 1,008,468,740.16
  5. Step 5: Solve for x
    x = 1,008,468,740.16/33,307.20
  6. Step 6: Final answer
    x = 30,277.80

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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.