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Finding the Fourth Proportional to 89,265, 123,185.70 and 49,521

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Solution

The fourth proportional to 89,265, 123,185.70 and 49,521 is: 68,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,265 : 123,185.70 = 49,521 : x
  2. Step 2: Convert to fraction form
    89,265/123,185.70 = 49,521/x
  3. Step 3: Cross multiply
    89,265x = 123,185.70 × 49,521
  4. Step 4: Simplify right side
    89,265x = 6,100,279,049.70
  5. Step 5: Solve for x
    x = 6,100,279,049.70/89,265
  6. Step 6: Final answer
    x = 68,338.98

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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.