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Finding the Fourth Proportional to 66,509.33, 99,764.87 and 22,136.09

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Solution

The fourth proportional to 66,509.33, 99,764.87 and 22,136.09 is: 33,204.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.33 : 99,764.87 = 22,136.09 : x
  2. Step 2: Convert to fraction form
    66,509.33/99,764.87 = 22,136.09/x
  3. Step 3: Cross multiply
    66,509.33x = 99,764.87 × 22,136.09
  4. Step 4: Simplify right side
    66,509.33x = 2,208,403,531.65
  5. Step 5: Solve for x
    x = 2,208,403,531.65/66,509.33
  6. Step 6: Final answer
    x = 33,204.42

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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.