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Finding the Fourth Proportional to 69,869.43, 104,820.41 and 19,950.21

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Solution

The fourth proportional to 69,869.43, 104,820.41 and 19,950.21 is: 29,929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,869.43 : 104,820.41 = 19,950.21 : x
  2. Step 2: Convert to fraction form
    69,869.43/104,820.41 = 19,950.21/x
  3. Step 3: Cross multiply
    69,869.43x = 104,820.41 × 19,950.21
  4. Step 4: Simplify right side
    69,869.43x = 2,091,189,191.79
  5. Step 5: Solve for x
    x = 2,091,189,191.79/69,869.43
  6. Step 6: Final answer
    x = 29,929.96

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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.