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Finding the Fourth Proportional to 69,963.75, 104,943.06 and 20,043.81

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Solution

The fourth proportional to 69,963.75, 104,943.06 and 20,043.81 is: 30,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,963.75 : 104,943.06 = 20,043.81 : x
  2. Step 2: Convert to fraction form
    69,963.75/104,943.06 = 20,043.81/x
  3. Step 3: Cross multiply
    69,963.75x = 104,943.06 × 20,043.81
  4. Step 4: Simplify right side
    69,963.75x = 2,103,458,755.46
  5. Step 5: Solve for x
    x = 2,103,458,755.46/69,963.75
  6. Step 6: Final answer
    x = 30,064.98

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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.