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Finding the Fourth Proportional to 80,764.75, 111,455.36 and 47,230.75

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Solution

The fourth proportional to 80,764.75, 111,455.36 and 47,230.75 is: 65,178.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,764.75 : 111,455.36 = 47,230.75 : x
  2. Step 2: Convert to fraction form
    80,764.75/111,455.36 = 47,230.75/x
  3. Step 3: Cross multiply
    80,764.75x = 111,455.36 × 47,230.75
  4. Step 4: Simplify right side
    80,764.75x = 5,264,120,244.32
  5. Step 5: Solve for x
    x = 5,264,120,244.32/80,764.75
  6. Step 6: Final answer
    x = 65,178.44

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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.