Home / 56,719.64-84,930.81-39,989.09

Finding the Fourth Proportional to 56,719.64, 84,930.81 and 39,989.09

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Solution

The fourth proportional to 56,719.64, 84,930.81 and 39,989.09 is: 59,878.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,719.64 : 84,930.81 = 39,989.09 : x
  2. Step 2: Convert to fraction form
    56,719.64/84,930.81 = 39,989.09/x
  3. Step 3: Cross multiply
    56,719.64x = 84,930.81 × 39,989.09
  4. Step 4: Simplify right side
    56,719.64x = 3,396,305,380.21
  5. Step 5: Solve for x
    x = 3,396,305,380.21/56,719.64
  6. Step 6: Final answer
    x = 59,878.83

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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.