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Finding the Fourth Proportional to 49,467.80, 68,269.90 and 28,253.88

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Solution

The fourth proportional to 49,467.80, 68,269.90 and 28,253.88 is: 38,992.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,467.80 : 68,269.90 = 28,253.88 : x
  2. Step 2: Convert to fraction form
    49,467.80/68,269.90 = 28,253.88/x
  3. Step 3: Cross multiply
    49,467.80x = 68,269.90 × 28,253.88
  4. Step 4: Simplify right side
    49,467.80x = 1,928,889,562.21
  5. Step 5: Solve for x
    x = 1,928,889,562.21/49,467.80
  6. Step 6: Final answer
    x = 38,992.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.