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Finding the Fourth Proportional to 33,115.80, 49,644.90 and 19,954.20

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Solution

The fourth proportional to 33,115.80, 49,644.90 and 19,954.20 is: 29,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,115.80 : 49,644.90 = 19,954.20 : x
  2. Step 2: Convert to fraction form
    33,115.80/49,644.90 = 19,954.20/x
  3. Step 3: Cross multiply
    33,115.80x = 49,644.90 × 19,954.20
  4. Step 4: Simplify right side
    33,115.80x = 990,624,263.58
  5. Step 5: Solve for x
    x = 990,624,263.58/33,115.80
  6. Step 6: Final answer
    x = 29,913.95

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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.