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Finding the Fourth Proportional to 69,004.96, 103,511.64 and 21,628.96

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Solution

The fourth proportional to 69,004.96, 103,511.64 and 21,628.96 is: 32,444.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,004.96 : 103,511.64 = 21,628.96 : x
  2. Step 2: Convert to fraction form
    69,004.96/103,511.64 = 21,628.96/x
  3. Step 3: Cross multiply
    69,004.96x = 103,511.64 × 21,628.96
  4. Step 4: Simplify right side
    69,004.96x = 2,238,849,121.09
  5. Step 5: Solve for x
    x = 2,238,849,121.09/69,004.96
  6. Step 6: Final answer
    x = 32,444.76

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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.