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Finding the Fourth Proportional to 67,033.88, 100,555.50 and 20,290.28

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Solution

The fourth proportional to 67,033.88, 100,555.50 and 20,290.28 is: 30,436.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,033.88 : 100,555.50 = 20,290.28 : x
  2. Step 2: Convert to fraction form
    67,033.88/100,555.50 = 20,290.28/x
  3. Step 3: Cross multiply
    67,033.88x = 100,555.50 × 20,290.28
  4. Step 4: Simplify right side
    67,033.88x = 2,040,299,250.54
  5. Step 5: Solve for x
    x = 2,040,299,250.54/67,033.88
  6. Step 6: Final answer
    x = 30,436.84

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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.