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Finding the Fourth Proportional to 79,889.76, 110,287.81 and 49,684.81

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Solution

The fourth proportional to 79,889.76, 110,287.81 and 49,684.81 is: 68,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,889.76 : 110,287.81 = 49,684.81 : x
  2. Step 2: Convert to fraction form
    79,889.76/110,287.81 = 49,684.81/x
  3. Step 3: Cross multiply
    79,889.76x = 110,287.81 × 49,684.81
  4. Step 4: Simplify right side
    79,889.76x = 5,479,628,209.52
  5. Step 5: Solve for x
    x = 5,479,628,209.52/79,889.76
  6. Step 6: Final answer
    x = 68,589.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.