Home / 89,218.50-123,121.53-49,474.50

Finding the Fourth Proportional to 89,218.50, 123,121.53 and 49,474.50

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Solution

The fourth proportional to 89,218.50, 123,121.53 and 49,474.50 is: 68,274.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,218.50 : 123,121.53 = 49,474.50 : x
  2. Step 2: Convert to fraction form
    89,218.50/123,121.53 = 49,474.50/x
  3. Step 3: Cross multiply
    89,218.50x = 123,121.53 × 49,474.50
  4. Step 4: Simplify right side
    89,218.50x = 6,091,376,135.99
  5. Step 5: Solve for x
    x = 6,091,376,135.99/89,218.50
  6. Step 6: Final answer
    x = 68,274.81

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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.