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Finding the Fourth Proportional to 79,804.64, 119,697.21 and 20,635.35

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Solution

The fourth proportional to 79,804.64, 119,697.21 and 20,635.35 is: 30,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,804.64 : 119,697.21 = 20,635.35 : x
  2. Step 2: Convert to fraction form
    79,804.64/119,697.21 = 20,635.35/x
  3. Step 3: Cross multiply
    79,804.64x = 119,697.21 × 20,635.35
  4. Step 4: Simplify right side
    79,804.64x = 2,469,993,822.37
  5. Step 5: Solve for x
    x = 2,469,993,822.37/79,804.64
  6. Step 6: Final answer
    x = 30,950.51

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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.