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Finding the Fourth Proportional to 33,290.40, 49,870.80 and 20,103.60

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Solution

The fourth proportional to 33,290.40, 49,870.80 and 20,103.60 is: 30,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,290.40 : 49,870.80 = 20,103.60 : x
  2. Step 2: Convert to fraction form
    33,290.40/49,870.80 = 20,103.60/x
  3. Step 3: Cross multiply
    33,290.40x = 49,870.80 × 20,103.60
  4. Step 4: Simplify right side
    33,290.40x = 1,002,582,614.88
  5. Step 5: Solve for x
    x = 1,002,582,614.88/33,290.40
  6. Step 6: Final answer
    x = 30,116.27

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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.