Home / 81,928.12-113,000.44-61,785.85

Finding the Fourth Proportional to 81,928.12, 113,000.44 and 61,785.85

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Solution

The fourth proportional to 81,928.12, 113,000.44 and 61,785.85 is: 85,218.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,928.12 : 113,000.44 = 61,785.85 : x
  2. Step 2: Convert to fraction form
    81,928.12/113,000.44 = 61,785.85/x
  3. Step 3: Cross multiply
    81,928.12x = 113,000.44 × 61,785.85
  4. Step 4: Simplify right side
    81,928.12x = 6,981,827,361.84
  5. Step 5: Solve for x
    x = 6,981,827,361.84/81,928.12
  6. Step 6: Final answer
    x = 85,218.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.