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Finding the Fourth Proportional to 71,321.20, 106,933.20 and 33,899.20

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Solution

The fourth proportional to 71,321.20, 106,933.20 and 33,899.20 is: 50,825.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,321.20 : 106,933.20 = 33,899.20 : x
  2. Step 2: Convert to fraction form
    71,321.20/106,933.20 = 33,899.20/x
  3. Step 3: Cross multiply
    71,321.20x = 106,933.20 × 33,899.20
  4. Step 4: Simplify right side
    71,321.20x = 3,624,949,933.44
  5. Step 5: Solve for x
    x = 3,624,949,933.44/71,321.20
  6. Step 6: Final answer
    x = 50,825.70

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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.