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Finding the Fourth Proportional to 66,855.08, 100,215.12 and 41,912.66

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Solution

The fourth proportional to 66,855.08, 100,215.12 and 41,912.66 is: 62,826.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,855.08 : 100,215.12 = 41,912.66 : x
  2. Step 2: Convert to fraction form
    66,855.08/100,215.12 = 41,912.66/x
  3. Step 3: Cross multiply
    66,855.08x = 100,215.12 × 41,912.66
  4. Step 4: Simplify right side
    66,855.08x = 4,200,282,251.42
  5. Step 5: Solve for x
    x = 4,200,282,251.42/66,855.08
  6. Step 6: Final answer
    x = 62,826.67

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1.5x scale

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.