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Finding the Fourth Proportional to 87,164.64, 130,746.96 and 60,920.64

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Solution

The fourth proportional to 87,164.64, 130,746.96 and 60,920.64 is: 91,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,164.64 : 130,746.96 = 60,920.64 : x
  2. Step 2: Convert to fraction form
    87,164.64/130,746.96 = 60,920.64/x
  3. Step 3: Cross multiply
    87,164.64x = 130,746.96 × 60,920.64
  4. Step 4: Simplify right side
    87,164.64x = 7,965,188,481.25
  5. Step 5: Solve for x
    x = 7,965,188,481.25/87,164.64
  6. Step 6: Final answer
    x = 91,380.96

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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.