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Finding the Fourth Proportional to 66,367.76, 99,568.44 and 19,620.62

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Solution

The fourth proportional to 66,367.76, 99,568.44 and 19,620.62 is: 29,435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,367.76 : 99,568.44 = 19,620.62 : x
  2. Step 2: Convert to fraction form
    66,367.76/99,568.44 = 19,620.62/x
  3. Step 3: Cross multiply
    66,367.76x = 99,568.44 × 19,620.62
  4. Step 4: Simplify right side
    66,367.76x = 1,953,594,525.23
  5. Step 5: Solve for x
    x = 1,953,594,525.23/66,367.76
  6. Step 6: Final answer
    x = 29,435.90

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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.