Home / 78,856.96-108,546.39-68,767.60

Finding the Fourth Proportional to 78,856.96, 108,546.39 and 68,767.60

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Solution

The fourth proportional to 78,856.96, 108,546.39 and 68,767.60 is: 94,658.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,856.96 : 108,546.39 = 68,767.60 : x
  2. Step 2: Convert to fraction form
    78,856.96/108,546.39 = 68,767.60/x
  3. Step 3: Cross multiply
    78,856.96x = 108,546.39 × 68,767.60
  4. Step 4: Simplify right side
    78,856.96x = 7,464,474,728.96
  5. Step 5: Solve for x
    x = 7,464,474,728.96/78,856.96
  6. Step 6: Final answer
    x = 94,658.41

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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.