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Finding the Fourth Proportional to 80,770.56, 111,191.04 and 66,600.96

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Solution

The fourth proportional to 80,770.56, 111,191.04 and 66,600.96 is: 91,684.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,770.56 : 111,191.04 = 66,600.96 : x
  2. Step 2: Convert to fraction form
    80,770.56/111,191.04 = 66,600.96/x
  3. Step 3: Cross multiply
    80,770.56x = 111,191.04 × 66,600.96
  4. Step 4: Simplify right side
    80,770.56x = 7,405,430,007.40
  5. Step 5: Solve for x
    x = 7,405,430,007.40/80,770.56
  6. Step 6: Final answer
    x = 91,684.77

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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.