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Finding the Fourth Proportional to 67,090.50, 100,639.17 and 17,171.01

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Solution

The fourth proportional to 67,090.50, 100,639.17 and 17,171.01 is: 25,757.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,090.50 : 100,639.17 = 17,171.01 : x
  2. Step 2: Convert to fraction form
    67,090.50/100,639.17 = 17,171.01/x
  3. Step 3: Cross multiply
    67,090.50x = 100,639.17 × 17,171.01
  4. Step 4: Simplify right side
    67,090.50x = 1,728,076,194.46
  5. Step 5: Solve for x
    x = 1,728,076,194.46/67,090.50
  6. Step 6: Final answer
    x = 25,757.39

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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.