Home / 215,787.90-323,720.76-66,025.38

Finding the Fourth Proportional to 215,787.90, 323,720.76 and 66,025.38

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Solution

The fourth proportional to 215,787.90, 323,720.76 and 66,025.38 is: 99,049.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,787.90 : 323,720.76 = 66,025.38 : x
  2. Step 2: Convert to fraction form
    215,787.90/323,720.76 = 66,025.38/x
  3. Step 3: Cross multiply
    215,787.90x = 323,720.76 × 66,025.38
  4. Step 4: Simplify right side
    215,787.90x = 21,373,786,192.89
  5. Step 5: Solve for x
    x = 21,373,786,192.89/215,787.90
  6. Step 6: Final answer
    x = 99,049.98

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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.