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Finding the Fourth Proportional to 67,778.88, 101,668.96 and 17,866.12

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Solution

The fourth proportional to 67,778.88, 101,668.96 and 17,866.12 is: 26,799.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,778.88 : 101,668.96 = 17,866.12 : x
  2. Step 2: Convert to fraction form
    67,778.88/101,668.96 = 17,866.12/x
  3. Step 3: Cross multiply
    67,778.88x = 101,668.96 × 17,866.12
  4. Step 4: Simplify right side
    67,778.88x = 1,816,429,839.64
  5. Step 5: Solve for x
    x = 1,816,429,839.64/67,778.88
  6. Step 6: Final answer
    x = 26,799.35

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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.