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Finding the Fourth Proportional to 66,456, 91,708.02 and 36,241.56

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Solution

The fourth proportional to 66,456, 91,708.02 and 36,241.56 is: 50,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,456 : 91,708.02 = 36,241.56 : x
  2. Step 2: Convert to fraction form
    66,456/91,708.02 = 36,241.56/x
  3. Step 3: Cross multiply
    66,456x = 91,708.02 × 36,241.56
  4. Step 4: Simplify right side
    66,456x = 3,323,641,709.31
  5. Step 5: Solve for x
    x = 3,323,641,709.31/66,456
  6. Step 6: Final answer
    x = 50,012.67

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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.