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Finding the Fourth Proportional to 47,446.68, 71,189.80 and 20,811.81

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Solution

The fourth proportional to 47,446.68, 71,189.80 and 20,811.81 is: 31,226.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,446.68 : 71,189.80 = 20,811.81 : x
  2. Step 2: Convert to fraction form
    47,446.68/71,189.80 = 20,811.81/x
  3. Step 3: Cross multiply
    47,446.68x = 71,189.80 × 20,811.81
  4. Step 4: Simplify right side
    47,446.68x = 1,481,588,591.54
  5. Step 5: Solve for x
    x = 1,481,588,591.54/47,446.68
  6. Step 6: Final answer
    x = 31,226.39

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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.