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Finding the Fourth Proportional to 215,787.92, 323,720.72 and 66,025.44

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Solution

The fourth proportional to 215,787.92, 323,720.72 and 66,025.44 is: 99,050.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,787.92 : 323,720.72 = 66,025.44 : x
  2. Step 2: Convert to fraction form
    215,787.92/323,720.72 = 66,025.44/x
  3. Step 3: Cross multiply
    215,787.92x = 323,720.72 × 66,025.44
  4. Step 4: Simplify right side
    215,787.92x = 21,373,802,975.12
  5. Step 5: Solve for x
    x = 21,373,802,975.12/215,787.92
  6. Step 6: Final answer
    x = 99,050.04

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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.