Home / 45,318.73-68,001.12-20,353.68

Finding the Fourth Proportional to 45,318.73, 68,001.12 and 20,353.68

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Solution

The fourth proportional to 45,318.73, 68,001.12 and 20,353.68 is: 30,540.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,318.73 : 68,001.12 = 20,353.68 : x
  2. Step 2: Convert to fraction form
    45,318.73/68,001.12 = 20,353.68/x
  3. Step 3: Cross multiply
    45,318.73x = 68,001.12 × 20,353.68
  4. Step 4: Simplify right side
    45,318.73x = 1,384,072,594.35
  5. Step 5: Solve for x
    x = 1,384,072,594.35/45,318.73
  6. Step 6: Final answer
    x = 30,540.85

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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.