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Finding the Fourth Proportional to 66,082.60, 91,162.80 and 37,771.80

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Solution

The fourth proportional to 66,082.60, 91,162.80 and 37,771.80 is: 52,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,082.60 : 91,162.80 = 37,771.80 : x
  2. Step 2: Convert to fraction form
    66,082.60/91,162.80 = 37,771.80/x
  3. Step 3: Cross multiply
    66,082.60x = 91,162.80 × 37,771.80
  4. Step 4: Simplify right side
    66,082.60x = 3,443,383,049.04
  5. Step 5: Solve for x
    x = 3,443,383,049.04/66,082.60
  6. Step 6: Final answer
    x = 52,107.26

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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.