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Finding the Fourth Proportional to 84,015.41, 125,960.49 and 36,621.50

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Solution

The fourth proportional to 84,015.41, 125,960.49 and 36,621.50 is: 54,904.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,015.41 : 125,960.49 = 36,621.50 : x
  2. Step 2: Convert to fraction form
    84,015.41/125,960.49 = 36,621.50/x
  3. Step 3: Cross multiply
    84,015.41x = 125,960.49 × 36,621.50
  4. Step 4: Simplify right side
    84,015.41x = 4,612,861,454.73
  5. Step 5: Solve for x
    x = 4,612,861,454.73/84,015.41
  6. Step 6: Final answer
    x = 54,904.95

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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.