Home / 81,986.96-123,017.08-39,843.92

Finding the Fourth Proportional to 81,986.96, 123,017.08 and 39,843.92

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Solution

The fourth proportional to 81,986.96, 123,017.08 and 39,843.92 is: 59,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,986.96 : 123,017.08 = 39,843.92 : x
  2. Step 2: Convert to fraction form
    81,986.96/123,017.08 = 39,843.92/x
  3. Step 3: Cross multiply
    81,986.96x = 123,017.08 × 39,843.92
  4. Step 4: Simplify right side
    81,986.96x = 4,901,482,694.15
  5. Step 5: Solve for x
    x = 4,901,482,694.15/81,986.96
  6. Step 6: Final answer
    x = 59,783.69

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1.5x scale

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.