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Finding the Fourth Proportional to 66,896.20, 100,311.90 and 37,282.60

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Solution

The fourth proportional to 66,896.20, 100,311.90 and 37,282.60 is: 55,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,896.20 : 100,311.90 = 37,282.60 : x
  2. Step 2: Convert to fraction form
    66,896.20/100,311.90 = 37,282.60/x
  3. Step 3: Cross multiply
    66,896.20x = 100,311.90 × 37,282.60
  4. Step 4: Simplify right side
    66,896.20x = 3,739,888,442.94
  5. Step 5: Solve for x
    x = 3,739,888,442.94/66,896.20
  6. Step 6: Final answer
    x = 55,905.84

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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.