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Finding the Fourth Proportional to 67,208.36, 100,816.20 and 17,288.88

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Solution

The fourth proportional to 67,208.36, 100,816.20 and 17,288.88 is: 25,934.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,208.36 : 100,816.20 = 17,288.88 : x
  2. Step 2: Convert to fraction form
    67,208.36/100,816.20 = 17,288.88/x
  3. Step 3: Cross multiply
    67,208.36x = 100,816.20 × 17,288.88
  4. Step 4: Simplify right side
    67,208.36x = 1,742,999,183.86
  5. Step 5: Solve for x
    x = 1,742,999,183.86/67,208.36
  6. Step 6: Final answer
    x = 25,934.26

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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.