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Finding the Fourth Proportional to 69,229.78, 103,693.83 and 45,510.54

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Solution

The fourth proportional to 69,229.78, 103,693.83 and 45,510.54 is: 68,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,229.78 : 103,693.83 = 45,510.54 : x
  2. Step 2: Convert to fraction form
    69,229.78/103,693.83 = 45,510.54/x
  3. Step 3: Cross multiply
    69,229.78x = 103,693.83 × 45,510.54
  4. Step 4: Simplify right side
    69,229.78x = 4,719,162,197.97
  5. Step 5: Solve for x
    x = 4,719,162,197.97/69,229.78
  6. Step 6: Final answer
    x = 68,166.65

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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.