Home / 45,105.82-67,691.54-20,174.02

Finding the Fourth Proportional to 45,105.82, 67,691.54 and 20,174.02

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Solution

The fourth proportional to 45,105.82, 67,691.54 and 20,174.02 is: 30,275.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,105.82 : 67,691.54 = 20,174.02 : x
  2. Step 2: Convert to fraction form
    45,105.82/67,691.54 = 20,174.02/x
  3. Step 3: Cross multiply
    45,105.82x = 67,691.54 × 20,174.02
  4. Step 4: Simplify right side
    45,105.82x = 1,365,610,363.00
  5. Step 5: Solve for x
    x = 1,365,610,363.00/45,105.82
  6. Step 6: Final answer
    x = 30,275.70

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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.