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Finding the Fourth Proportional to 49,889.79, 74,872.76 and 18,329.76

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Solution

The fourth proportional to 49,889.79, 74,872.76 and 18,329.76 is: 27,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,889.79 : 74,872.76 = 18,329.76 : x
  2. Step 2: Convert to fraction form
    49,889.79/74,872.76 = 18,329.76/x
  3. Step 3: Cross multiply
    49,889.79x = 74,872.76 × 18,329.76
  4. Step 4: Simplify right side
    49,889.79x = 1,372,399,629.69
  5. Step 5: Solve for x
    x = 1,372,399,629.69/49,889.79
  6. Step 6: Final answer
    x = 27,508.63

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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.