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Finding the Fourth Proportional to 89,768.77, 123,880.29 and 49,482.57

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Solution

The fourth proportional to 89,768.77, 123,880.29 and 49,482.57 is: 68,285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,768.77 : 123,880.29 = 49,482.57 : x
  2. Step 2: Convert to fraction form
    89,768.77/123,880.29 = 49,482.57/x
  3. Step 3: Cross multiply
    89,768.77x = 123,880.29 × 49,482.57
  4. Step 4: Simplify right side
    89,768.77x = 6,129,915,121.55
  5. Step 5: Solve for x
    x = 6,129,915,121.55/89,768.77
  6. Step 6: Final answer
    x = 68,285.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.