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Finding the Fourth Proportional to 69,005.96, 103,513.14 and 21,629.96

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Solution

The fourth proportional to 69,005.96, 103,513.14 and 21,629.96 is: 32,446.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,005.96 : 103,513.14 = 21,629.96 : x
  2. Step 2: Convert to fraction form
    69,005.96/103,513.14 = 21,629.96/x
  3. Step 3: Cross multiply
    69,005.96x = 103,513.14 × 21,629.96
  4. Step 4: Simplify right side
    69,005.96x = 2,238,985,077.67
  5. Step 5: Solve for x
    x = 2,238,985,077.67/69,005.96
  6. Step 6: Final answer
    x = 32,446.26

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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.