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Finding the Fourth Proportional to 66,893.92, 100,353.40 and 54,522.32

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Solution

The fourth proportional to 66,893.92, 100,353.40 and 54,522.32 is: 81,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,893.92 : 100,353.40 = 54,522.32 : x
  2. Step 2: Convert to fraction form
    66,893.92/100,353.40 = 54,522.32/x
  3. Step 3: Cross multiply
    66,893.92x = 100,353.40 × 54,522.32
  4. Step 4: Simplify right side
    66,893.92x = 5,471,500,187.89
  5. Step 5: Solve for x
    x = 5,471,500,187.89/66,893.92
  6. Step 6: Final answer
    x = 81,793.68

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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.