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Finding the Fourth Proportional to 66,367.68, 99,552.24 and 19,620.96

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Solution

The fourth proportional to 66,367.68, 99,552.24 and 19,620.96 is: 29,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,367.68 : 99,552.24 = 19,620.96 : x
  2. Step 2: Convert to fraction form
    66,367.68/99,552.24 = 19,620.96/x
  3. Step 3: Cross multiply
    66,367.68x = 99,552.24 × 19,620.96
  4. Step 4: Simplify right side
    66,367.68x = 1,953,310,518.95
  5. Step 5: Solve for x
    x = 1,953,310,518.95/66,367.68
  6. Step 6: Final answer
    x = 29,431.65

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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.