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Finding the Fourth Proportional to 61,269.92, 91,893.12 and 21,826.88

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Solution

The fourth proportional to 61,269.92, 91,893.12 and 21,826.88 is: 32,736.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,269.92 : 91,893.12 = 21,826.88 : x
  2. Step 2: Convert to fraction form
    61,269.92/91,893.12 = 21,826.88/x
  3. Step 3: Cross multiply
    61,269.92x = 91,893.12 × 21,826.88
  4. Step 4: Simplify right side
    61,269.92x = 2,005,740,103.07
  5. Step 5: Solve for x
    x = 2,005,740,103.07/61,269.92
  6. Step 6: Final answer
    x = 32,736.13

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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.