Home / 80,771.06-111,191.73-66,601.46

Finding the Fourth Proportional to 80,771.06, 111,191.73 and 66,601.46

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Solution

The fourth proportional to 80,771.06, 111,191.73 and 66,601.46 is: 91,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.06 : 111,191.73 = 66,601.46 : x
  2. Step 2: Convert to fraction form
    80,771.06/111,191.73 = 66,601.46/x
  3. Step 3: Cross multiply
    80,771.06x = 111,191.73 × 66,601.46
  4. Step 4: Simplify right side
    80,771.06x = 7,405,531,557.93
  5. Step 5: Solve for x
    x = 7,405,531,557.93/80,771.06
  6. Step 6: Final answer
    x = 91,685.46

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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.