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Finding the Fourth Proportional to 66,286.56, 99,284 and 42,841.92

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Solution

The fourth proportional to 66,286.56, 99,284 and 42,841.92 is: 64,168.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,286.56 : 99,284 = 42,841.92 : x
  2. Step 2: Convert to fraction form
    66,286.56/99,284 = 42,841.92/x
  3. Step 3: Cross multiply
    66,286.56x = 99,284 × 42,841.92
  4. Step 4: Simplify right side
    66,286.56x = 4,253,517,185.28
  5. Step 5: Solve for x
    x = 4,253,517,185.28/66,286.56
  6. Step 6: Final answer
    x = 64,168.62

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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.