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Finding the Fourth Proportional to 80,984.62, 111,758.94 and 45,173.71

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Solution

The fourth proportional to 80,984.62, 111,758.94 and 45,173.71 is: 62,339.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,984.62 : 111,758.94 = 45,173.71 : x
  2. Step 2: Convert to fraction form
    80,984.62/111,758.94 = 45,173.71/x
  3. Step 3: Cross multiply
    80,984.62x = 111,758.94 × 45,173.71
  4. Step 4: Simplify right side
    80,984.62x = 5,048,565,945.47
  5. Step 5: Solve for x
    x = 5,048,565,945.47/80,984.62
  6. Step 6: Final answer
    x = 62,339.81

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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.