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Finding the Fourth Proportional to 67,079.68, 100,640.58 and 27,655.36

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Solution

The fourth proportional to 67,079.68, 100,640.58 and 27,655.36 is: 41,491.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,079.68 : 100,640.58 = 27,655.36 : x
  2. Step 2: Convert to fraction form
    67,079.68/100,640.58 = 27,655.36/x
  3. Step 3: Cross multiply
    67,079.68x = 100,640.58 × 27,655.36
  4. Step 4: Simplify right side
    67,079.68x = 2,783,251,470.51
  5. Step 5: Solve for x
    x = 2,783,251,470.51/67,079.68
  6. Step 6: Final answer
    x = 41,491.72

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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.