Home / 91,078.20-125,785.94-69,336

Finding the Fourth Proportional to 91,078.20, 125,785.94 and 69,336

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Solution

The fourth proportional to 91,078.20, 125,785.94 and 69,336 is: 95,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,078.20 : 125,785.94 = 69,336 : x
  2. Step 2: Convert to fraction form
    91,078.20/125,785.94 = 69,336/x
  3. Step 3: Cross multiply
    91,078.20x = 125,785.94 × 69,336
  4. Step 4: Simplify right side
    91,078.20x = 8,721,493,589.16
  5. Step 5: Solve for x
    x = 8,721,493,589.16/91,078.20
  6. Step 6: Final answer
    x = 95,758.30

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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.