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Finding the Fourth Proportional to 69,479.67, 104,218.75 and 16,889.21

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Solution

The fourth proportional to 69,479.67, 104,218.75 and 16,889.21 is: 25,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,479.67 : 104,218.75 = 16,889.21 : x
  2. Step 2: Convert to fraction form
    69,479.67/104,218.75 = 16,889.21/x
  3. Step 3: Cross multiply
    69,479.67x = 104,218.75 × 16,889.21
  4. Step 4: Simplify right side
    69,479.67x = 1,760,172,245.53
  5. Step 5: Solve for x
    x = 1,760,172,245.53/69,479.67
  6. Step 6: Final answer
    x = 25,333.63

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1.5x scale

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.