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Finding the Fourth Proportional to 69,471.35, 104,121.53 and 39,510.73

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Solution

The fourth proportional to 69,471.35, 104,121.53 and 39,510.73 is: 59,217.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,471.35 : 104,121.53 = 39,510.73 : x
  2. Step 2: Convert to fraction form
    69,471.35/104,121.53 = 39,510.73/x
  3. Step 3: Cross multiply
    69,471.35x = 104,121.53 × 39,510.73
  4. Step 4: Simplify right side
    69,471.35x = 4,113,916,940.86
  5. Step 5: Solve for x
    x = 4,113,916,940.86/69,471.35
  6. Step 6: Final answer
    x = 59,217.46

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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.