Home / 82,661.40-123,992.10-57,778.20

Finding the Fourth Proportional to 82,661.40, 123,992.10 and 57,778.20

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Solution

The fourth proportional to 82,661.40, 123,992.10 and 57,778.20 is: 86,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,661.40 : 123,992.10 = 57,778.20 : x
  2. Step 2: Convert to fraction form
    82,661.40/123,992.10 = 57,778.20/x
  3. Step 3: Cross multiply
    82,661.40x = 123,992.10 × 57,778.20
  4. Step 4: Simplify right side
    82,661.40x = 7,164,040,352.22
  5. Step 5: Solve for x
    x = 7,164,040,352.22/82,661.40
  6. Step 6: Final answer
    x = 86,667.30

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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.