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Finding the Fourth Proportional to 66,890.20, 100,302.90 and 37,276.60

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Solution

The fourth proportional to 66,890.20, 100,302.90 and 37,276.60 is: 55,896.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,890.20 : 100,302.90 = 37,276.60 : x
  2. Step 2: Convert to fraction form
    66,890.20/100,302.90 = 37,276.60/x
  3. Step 3: Cross multiply
    66,890.20x = 100,302.90 × 37,276.60
  4. Step 4: Simplify right side
    66,890.20x = 3,738,951,082.14
  5. Step 5: Solve for x
    x = 3,738,951,082.14/66,890.20
  6. Step 6: Final answer
    x = 55,896.84

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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.