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Finding the Fourth Proportional to 73,661.60, 110,472.20 and 20,340.84

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Solution

The fourth proportional to 73,661.60, 110,472.20 and 20,340.84 is: 30,505.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,661.60 : 110,472.20 = 20,340.84 : x
  2. Step 2: Convert to fraction form
    73,661.60/110,472.20 = 20,340.84/x
  3. Step 3: Cross multiply
    73,661.60x = 110,472.20 × 20,340.84
  4. Step 4: Simplify right side
    73,661.60x = 2,247,097,344.65
  5. Step 5: Solve for x
    x = 2,247,097,344.65/73,661.60
  6. Step 6: Final answer
    x = 30,505.68

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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.