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Finding the Fourth Proportional to 69,371.66, 104,056.88 and 21,986.66

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Solution

The fourth proportional to 69,371.66, 104,056.88 and 21,986.66 is: 32,979.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,371.66 : 104,056.88 = 21,986.66 : x
  2. Step 2: Convert to fraction form
    69,371.66/104,056.88 = 21,986.66/x
  3. Step 3: Cross multiply
    69,371.66x = 104,056.88 × 21,986.66
  4. Step 4: Simplify right side
    69,371.66x = 2,287,862,611.00
  5. Step 5: Solve for x
    x = 2,287,862,611.00/69,371.66
  6. Step 6: Final answer
    x = 32,979.79

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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.