Home / 69,343.18-103,998.68-19,426.78

Finding the Fourth Proportional to 69,343.18, 103,998.68 and 19,426.78

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Solution

The fourth proportional to 69,343.18, 103,998.68 and 19,426.78 is: 29,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,343.18 : 103,998.68 = 19,426.78 : x
  2. Step 2: Convert to fraction form
    69,343.18/103,998.68 = 19,426.78/x
  3. Step 3: Cross multiply
    69,343.18x = 103,998.68 × 19,426.78
  4. Step 4: Simplify right side
    69,343.18x = 2,020,359,476.65
  5. Step 5: Solve for x
    x = 2,020,359,476.65/69,343.18
  6. Step 6: Final answer
    x = 29,135.66

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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.