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Finding the Fourth Proportional to 66,481.62, 99,721.67 and 19,097.87

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Solution

The fourth proportional to 66,481.62, 99,721.67 and 19,097.87 is: 28,646.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.62 : 99,721.67 = 19,097.87 : x
  2. Step 2: Convert to fraction form
    66,481.62/99,721.67 = 19,097.87/x
  3. Step 3: Cross multiply
    66,481.62x = 99,721.67 × 19,097.87
  4. Step 4: Simplify right side
    66,481.62x = 1,904,471,643.66
  5. Step 5: Solve for x
    x = 1,904,471,643.66/66,481.62
  6. Step 6: Final answer
    x = 28,646.59

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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.