Home / 66,511.71-99,784.17-19,764.59

Finding the Fourth Proportional to 66,511.71, 99,784.17 and 19,764.59

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Solution

The fourth proportional to 66,511.71, 99,784.17 and 19,764.59 is: 29,651.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,511.71 : 99,784.17 = 19,764.59 : x
  2. Step 2: Convert to fraction form
    66,511.71/99,784.17 = 19,764.59/x
  3. Step 3: Cross multiply
    66,511.71x = 99,784.17 × 19,764.59
  4. Step 4: Simplify right side
    66,511.71x = 1,972,192,709.62
  5. Step 5: Solve for x
    x = 1,972,192,709.62/66,511.71
  6. Step 6: Final answer
    x = 29,651.81

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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.