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Finding the Fourth Proportional to 80,672.52, 111,328.08 and 45,344.52

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Solution

The fourth proportional to 80,672.52, 111,328.08 and 45,344.52 is: 62,575.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.52 : 111,328.08 = 45,344.52 : x
  2. Step 2: Convert to fraction form
    80,672.52/111,328.08 = 45,344.52/x
  3. Step 3: Cross multiply
    80,672.52x = 111,328.08 × 45,344.52
  4. Step 4: Simplify right side
    80,672.52x = 5,048,118,350.12
  5. Step 5: Solve for x
    x = 5,048,118,350.12/80,672.52
  6. Step 6: Final answer
    x = 62,575.44

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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.