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Finding the Fourth Proportional to 45,005, 67,471.05 and 18,729.41

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Solution

The fourth proportional to 45,005, 67,471.05 and 18,729.41 is: 28,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,005 : 67,471.05 = 18,729.41 : x
  2. Step 2: Convert to fraction form
    45,005/67,471.05 = 18,729.41/x
  3. Step 3: Cross multiply
    45,005x = 67,471.05 × 18,729.41
  4. Step 4: Simplify right side
    45,005x = 1,263,692,958.58
  5. Step 5: Solve for x
    x = 1,263,692,958.58/45,005
  6. Step 6: Final answer
    x = 28,078.95

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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.