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Finding the Fourth Proportional to 67,109.59, 100,662.09 and 17,190.12

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Solution

The fourth proportional to 67,109.59, 100,662.09 and 17,190.12 is: 25,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,109.59 : 100,662.09 = 17,190.12 : x
  2. Step 2: Convert to fraction form
    67,109.59/100,662.09 = 17,190.12/x
  3. Step 3: Cross multiply
    67,109.59x = 100,662.09 × 17,190.12
  4. Step 4: Simplify right side
    67,109.59x = 1,730,393,707.48
  5. Step 5: Solve for x
    x = 1,730,393,707.48/67,109.59
  6. Step 6: Final answer
    x = 25,784.59

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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.