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Finding the Fourth Proportional to 69,799.86, 104,697.90 and 17,209.80

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Solution

The fourth proportional to 69,799.86, 104,697.90 and 17,209.80 is: 25,814.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,799.86 : 104,697.90 = 17,209.80 : x
  2. Step 2: Convert to fraction form
    69,799.86/104,697.90 = 17,209.80/x
  3. Step 3: Cross multiply
    69,799.86x = 104,697.90 × 17,209.80
  4. Step 4: Simplify right side
    69,799.86x = 1,801,829,919.42
  5. Step 5: Solve for x
    x = 1,801,829,919.42/69,799.86
  6. Step 6: Final answer
    x = 25,814.23

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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.