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Finding the Fourth Proportional to 67,399.99, 101,102.56 and 17,478.78

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Solution

The fourth proportional to 67,399.99, 101,102.56 and 17,478.78 is: 26,218.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,399.99 : 101,102.56 = 17,478.78 : x
  2. Step 2: Convert to fraction form
    67,399.99/101,102.56 = 17,478.78/x
  3. Step 3: Cross multiply
    67,399.99x = 101,102.56 × 17,478.78
  4. Step 4: Simplify right side
    67,399.99x = 1,767,149,403.68
  5. Step 5: Solve for x
    x = 1,767,149,403.68/67,399.99
  6. Step 6: Final answer
    x = 26,218.84

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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.