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Finding the Fourth Proportional to 66,443.64, 91,692.94 and 36,228.72

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Solution

The fourth proportional to 66,443.64, 91,692.94 and 36,228.72 is: 49,996.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.64 : 91,692.94 = 36,228.72 : x
  2. Step 2: Convert to fraction form
    66,443.64/91,692.94 = 36,228.72/x
  3. Step 3: Cross multiply
    66,443.64x = 91,692.94 × 36,228.72
  4. Step 4: Simplify right side
    66,443.64x = 3,321,917,849.24
  5. Step 5: Solve for x
    x = 3,321,917,849.24/66,443.64
  6. Step 6: Final answer
    x = 49,996.02

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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.