Home / 85,086.45-127,644.87-28,923.60

Finding the Fourth Proportional to 85,086.45, 127,644.87 and 28,923.60

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Solution

The fourth proportional to 85,086.45, 127,644.87 and 28,923.60 is: 43,390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,086.45 : 127,644.87 = 28,923.60 : x
  2. Step 2: Convert to fraction form
    85,086.45/127,644.87 = 28,923.60/x
  3. Step 3: Cross multiply
    85,086.45x = 127,644.87 × 28,923.60
  4. Step 4: Simplify right side
    85,086.45x = 3,691,949,640.60
  5. Step 5: Solve for x
    x = 3,691,949,640.60/85,086.45
  6. Step 6: Final answer
    x = 43,390.57

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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.