Home / 90,921.44-136,403.60-28,591.94

Finding the Fourth Proportional to 90,921.44, 136,403.60 and 28,591.94

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Solution

The fourth proportional to 90,921.44, 136,403.60 and 28,591.94 is: 42,894.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,921.44 : 136,403.60 = 28,591.94 : x
  2. Step 2: Convert to fraction form
    90,921.44/136,403.60 = 28,591.94/x
  3. Step 3: Cross multiply
    90,921.44x = 136,403.60 × 28,591.94
  4. Step 4: Simplify right side
    90,921.44x = 3,900,043,546.98
  5. Step 5: Solve for x
    x = 3,900,043,546.98/90,921.44
  6. Step 6: Final answer
    x = 42,894.65

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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.