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Finding the Fourth Proportional to 69,580.81, 104,375.54 and 19,664.73

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Solution

The fourth proportional to 69,580.81, 104,375.54 and 19,664.73 is: 29,498.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,580.81 : 104,375.54 = 19,664.73 : x
  2. Step 2: Convert to fraction form
    69,580.81/104,375.54 = 19,664.73/x
  3. Step 3: Cross multiply
    69,580.81x = 104,375.54 × 19,664.73
  4. Step 4: Simplify right side
    69,580.81x = 2,052,516,812.70
  5. Step 5: Solve for x
    x = 2,052,516,812.70/69,580.81
  6. Step 6: Final answer
    x = 29,498.32

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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.