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Finding the Fourth Proportional to 80,624.70, 120,930.57 and 28,026.54

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Solution

The fourth proportional to 80,624.70, 120,930.57 and 28,026.54 is: 42,037.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,624.70 : 120,930.57 = 28,026.54 : x
  2. Step 2: Convert to fraction form
    80,624.70/120,930.57 = 28,026.54/x
  3. Step 3: Cross multiply
    80,624.70x = 120,930.57 × 28,026.54
  4. Step 4: Simplify right side
    80,624.70x = 3,389,265,457.33
  5. Step 5: Solve for x
    x = 3,389,265,457.33/80,624.70
  6. Step 6: Final answer
    x = 42,037.56

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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.