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Finding the Fourth Proportional to 90,850.77, 136,281.93 and 28,523.73

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Solution

The fourth proportional to 90,850.77, 136,281.93 and 28,523.73 is: 42,787.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,850.77 : 136,281.93 = 28,523.73 : x
  2. Step 2: Convert to fraction form
    90,850.77/136,281.93 = 28,523.73/x
  3. Step 3: Cross multiply
    90,850.77x = 136,281.93 × 28,523.73
  4. Step 4: Simplify right side
    90,850.77x = 3,887,268,975.20
  5. Step 5: Solve for x
    x = 3,887,268,975.20/90,850.77
  6. Step 6: Final answer
    x = 42,787.41

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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.