Home / 67,285.20-100,928.58-28,811.52

Finding the Fourth Proportional to 67,285.20, 100,928.58 and 28,811.52

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Solution

The fourth proportional to 67,285.20, 100,928.58 and 28,811.52 is: 43,217.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,285.20 : 100,928.58 = 28,811.52 : x
  2. Step 2: Convert to fraction form
    67,285.20/100,928.58 = 28,811.52/x
  3. Step 3: Cross multiply
    67,285.20x = 100,928.58 × 28,811.52
  4. Step 4: Simplify right side
    67,285.20x = 2,907,905,801.24
  5. Step 5: Solve for x
    x = 2,907,905,801.24/67,285.20
  6. Step 6: Final answer
    x = 43,217.61

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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.