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Finding the Fourth Proportional to 84,491.36, 126,765.12 and 28,337

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Solution

The fourth proportional to 84,491.36, 126,765.12 and 28,337 is: 42,514.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,491.36 : 126,765.12 = 28,337 : x
  2. Step 2: Convert to fraction form
    84,491.36/126,765.12 = 28,337/x
  3. Step 3: Cross multiply
    84,491.36x = 126,765.12 × 28,337
  4. Step 4: Simplify right side
    84,491.36x = 3,592,143,205.44
  5. Step 5: Solve for x
    x = 3,592,143,205.44/84,491.36
  6. Step 6: Final answer
    x = 42,514.92

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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.