Home / 66,091.78-99,137.73-54,380.38

Finding the Fourth Proportional to 66,091.78, 99,137.73 and 54,380.38

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Solution

The fourth proportional to 66,091.78, 99,137.73 and 54,380.38 is: 81,570.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,091.78 : 99,137.73 = 54,380.38 : x
  2. Step 2: Convert to fraction form
    66,091.78/99,137.73 = 54,380.38/x
  3. Step 3: Cross multiply
    66,091.78x = 99,137.73 × 54,380.38
  4. Step 4: Simplify right side
    66,091.78x = 5,391,147,429.74
  5. Step 5: Solve for x
    x = 5,391,147,429.74/66,091.78
  6. Step 6: Final answer
    x = 81,570.62

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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.