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Finding the Fourth Proportional to 66,167.80, 99,251.70 and 28,745.80

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Solution

The fourth proportional to 66,167.80, 99,251.70 and 28,745.80 is: 43,118.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,167.80 : 99,251.70 = 28,745.80 : x
  2. Step 2: Convert to fraction form
    66,167.80/99,251.70 = 28,745.80/x
  3. Step 3: Cross multiply
    66,167.80x = 99,251.70 × 28,745.80
  4. Step 4: Simplify right side
    66,167.80x = 2,853,069,517.86
  5. Step 5: Solve for x
    x = 2,853,069,517.86/66,167.80
  6. Step 6: Final answer
    x = 43,118.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.