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Finding the Fourth Proportional to 69,990.72, 104,998.50 and 27,871.26

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Solution

The fourth proportional to 69,990.72, 104,998.50 and 27,871.26 is: 41,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,990.72 : 104,998.50 = 27,871.26 : x
  2. Step 2: Convert to fraction form
    69,990.72/104,998.50 = 27,871.26/x
  3. Step 3: Cross multiply
    69,990.72x = 104,998.50 × 27,871.26
  4. Step 4: Simplify right side
    69,990.72x = 2,926,440,493.11
  5. Step 5: Solve for x
    x = 2,926,440,493.11/69,990.72
  6. Step 6: Final answer
    x = 41,811.84

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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.