Home / 91,236.38-136,876.43-28,906.88

Finding the Fourth Proportional to 91,236.38, 136,876.43 and 28,906.88

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Solution

The fourth proportional to 91,236.38, 136,876.43 and 28,906.88 is: 43,367.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,236.38 : 136,876.43 = 28,906.88 : x
  2. Step 2: Convert to fraction form
    91,236.38/136,876.43 = 28,906.88/x
  3. Step 3: Cross multiply
    91,236.38x = 136,876.43 × 28,906.88
  4. Step 4: Simplify right side
    91,236.38x = 3,956,669,924.72
  5. Step 5: Solve for x
    x = 3,956,669,924.72/91,236.38
  6. Step 6: Final answer
    x = 43,367.24

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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.