Home / 68,217.12-102,345.12-49,515.84

Finding the Fourth Proportional to 68,217.12, 102,345.12 and 49,515.84

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Solution

The fourth proportional to 68,217.12, 102,345.12 and 49,515.84 is: 74,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,217.12 : 102,345.12 = 49,515.84 : x
  2. Step 2: Convert to fraction form
    68,217.12/102,345.12 = 49,515.84/x
  3. Step 3: Cross multiply
    68,217.12x = 102,345.12 × 49,515.84
  4. Step 4: Simplify right side
    68,217.12x = 5,067,704,586.70
  5. Step 5: Solve for x
    x = 5,067,704,586.70/68,217.12
  6. Step 6: Final answer
    x = 74,287.87

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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.