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Finding the Fourth Proportional to 66,976.34, 100,479.69 and 19,592.55

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Solution

The fourth proportional to 66,976.34, 100,479.69 and 19,592.55 is: 29,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,976.34 : 100,479.69 = 19,592.55 : x
  2. Step 2: Convert to fraction form
    66,976.34/100,479.69 = 19,592.55/x
  3. Step 3: Cross multiply
    66,976.34x = 100,479.69 × 19,592.55
  4. Step 4: Simplify right side
    66,976.34x = 1,968,653,350.31
  5. Step 5: Solve for x
    x = 1,968,653,350.31/66,976.34
  6. Step 6: Final answer
    x = 29,393.27

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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.