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Finding the Fourth Proportional to 67,382.88, 101,079.18 and 20,629.68

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Solution

The fourth proportional to 67,382.88, 101,079.18 and 20,629.68 is: 30,946.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,382.88 : 101,079.18 = 20,629.68 : x
  2. Step 2: Convert to fraction form
    67,382.88/101,079.18 = 20,629.68/x
  3. Step 3: Cross multiply
    67,382.88x = 101,079.18 × 20,629.68
  4. Step 4: Simplify right side
    67,382.88x = 2,085,231,138.06
  5. Step 5: Solve for x
    x = 2,085,231,138.06/67,382.88
  6. Step 6: Final answer
    x = 30,946.01

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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.