Home / 79,942.11-119,889.12-65,867.25

Finding the Fourth Proportional to 79,942.11, 119,889.12 and 65,867.25

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Solution

The fourth proportional to 79,942.11, 119,889.12 and 65,867.25 is: 98,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,942.11 : 119,889.12 = 65,867.25 : x
  2. Step 2: Convert to fraction form
    79,942.11/119,889.12 = 65,867.25/x
  3. Step 3: Cross multiply
    79,942.11x = 119,889.12 × 65,867.25
  4. Step 4: Simplify right side
    79,942.11x = 7,896,766,639.32
  5. Step 5: Solve for x
    x = 7,896,766,639.32/79,942.11
  6. Step 6: Final answer
    x = 98,781.06

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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.