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Finding the Fourth Proportional to 47,843.88, 71,770.72 and 18,286.60

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Solution

The fourth proportional to 47,843.88, 71,770.72 and 18,286.60 is: 27,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,843.88 : 71,770.72 = 18,286.60 : x
  2. Step 2: Convert to fraction form
    47,843.88/71,770.72 = 18,286.60/x
  3. Step 3: Cross multiply
    47,843.88x = 71,770.72 × 18,286.60
  4. Step 4: Simplify right side
    47,843.88x = 1,312,442,448.35
  5. Step 5: Solve for x
    x = 1,312,442,448.35/47,843.88
  6. Step 6: Final answer
    x = 27,431.77

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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.