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Finding the Fourth Proportional to 80,626.62, 120,950.88 and 28,029.30

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Solution

The fourth proportional to 80,626.62, 120,950.88 and 28,029.30 is: 42,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,626.62 : 120,950.88 = 28,029.30 : x
  2. Step 2: Convert to fraction form
    80,626.62/120,950.88 = 28,029.30/x
  3. Step 3: Cross multiply
    80,626.62x = 120,950.88 × 28,029.30
  4. Step 4: Simplify right side
    80,626.62x = 3,390,168,500.78
  5. Step 5: Solve for x
    x = 3,390,168,500.78/80,626.62
  6. Step 6: Final answer
    x = 42,047.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.