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Finding the Fourth Proportional to 66,289.05, 91,478.90 and 36,481.05

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Solution

The fourth proportional to 66,289.05, 91,478.90 and 36,481.05 is: 50,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.05 : 91,478.90 = 36,481.05 : x
  2. Step 2: Convert to fraction form
    66,289.05/91,478.90 = 36,481.05/x
  3. Step 3: Cross multiply
    66,289.05x = 91,478.90 × 36,481.05
  4. Step 4: Simplify right side
    66,289.05x = 3,337,246,324.85
  5. Step 5: Solve for x
    x = 3,337,246,324.85/66,289.05
  6. Step 6: Final answer
    x = 50,343.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.