Home / 68,231.34-102,362.60-20,853.18

Finding the Fourth Proportional to 68,231.34, 102,362.60 and 20,853.18

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Solution

The fourth proportional to 68,231.34, 102,362.60 and 20,853.18 is: 31,284.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,231.34 : 102,362.60 = 20,853.18 : x
  2. Step 2: Convert to fraction form
    68,231.34/102,362.60 = 20,853.18/x
  3. Step 3: Cross multiply
    68,231.34x = 102,362.60 × 20,853.18
  4. Step 4: Simplify right side
    68,231.34x = 2,134,585,618.80
  5. Step 5: Solve for x
    x = 2,134,585,618.80/68,231.34
  6. Step 6: Final answer
    x = 31,284.53

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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.