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Finding the Fourth Proportional to 73,111.68, 109,711.22 and 67,163.04

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Solution

The fourth proportional to 73,111.68, 109,711.22 and 67,163.04 is: 100,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,111.68 : 109,711.22 = 67,163.04 : x
  2. Step 2: Convert to fraction form
    73,111.68/109,711.22 = 67,163.04/x
  3. Step 3: Cross multiply
    73,111.68x = 109,711.22 × 67,163.04
  4. Step 4: Simplify right side
    73,111.68x = 7,368,538,721.49
  5. Step 5: Solve for x
    x = 7,368,538,721.49/73,111.68
  6. Step 6: Final answer
    x = 100,784.70

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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.