Home / 81,684.18-122,318.91-65,233.62

Finding the Fourth Proportional to 81,684.18, 122,318.91 and 65,233.62

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Solution

The fourth proportional to 81,684.18, 122,318.91 and 65,233.62 is: 97,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,684.18 : 122,318.91 = 65,233.62 : x
  2. Step 2: Convert to fraction form
    81,684.18/122,318.91 = 65,233.62/x
  3. Step 3: Cross multiply
    81,684.18x = 122,318.91 × 65,233.62
  4. Step 4: Simplify right side
    81,684.18x = 7,979,305,293.75
  5. Step 5: Solve for x
    x = 7,979,305,293.75/81,684.18
  6. Step 6: Final answer
    x = 97,684.83

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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.