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Finding the Fourth Proportional to 80,704.53, 111,452.10 and 66,505.05

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Solution

The fourth proportional to 80,704.53, 111,452.10 and 66,505.05 is: 91,842.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,704.53 : 111,452.10 = 66,505.05 : x
  2. Step 2: Convert to fraction form
    80,704.53/111,452.10 = 66,505.05/x
  3. Step 3: Cross multiply
    80,704.53x = 111,452.10 × 66,505.05
  4. Step 4: Simplify right side
    80,704.53x = 7,412,127,483.11
  5. Step 5: Solve for x
    x = 7,412,127,483.11/80,704.53
  6. Step 6: Final answer
    x = 91,842.77

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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.