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Finding the Fourth Proportional to 67,633.60, 101,644.80 and 66,467.20

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Solution

The fourth proportional to 67,633.60, 101,644.80 and 66,467.20 is: 99,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,633.60 : 101,644.80 = 66,467.20 : x
  2. Step 2: Convert to fraction form
    67,633.60/101,644.80 = 66,467.20/x
  3. Step 3: Cross multiply
    67,633.60x = 101,644.80 × 66,467.20
  4. Step 4: Simplify right side
    67,633.60x = 6,756,045,250.56
  5. Step 5: Solve for x
    x = 6,756,045,250.56/67,633.60
  6. Step 6: Final answer
    x = 99,891.85

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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.