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Finding the Fourth Proportional to 99,715.44, 149,448.42 and 49,809.48

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Solution

The fourth proportional to 99,715.44, 149,448.42 and 49,809.48 is: 74,651.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,715.44 : 149,448.42 = 49,809.48 : x
  2. Step 2: Convert to fraction form
    99,715.44/149,448.42 = 49,809.48/x
  3. Step 3: Cross multiply
    99,715.44x = 149,448.42 × 49,809.48
  4. Step 4: Simplify right side
    99,715.44x = 7,443,948,087.02
  5. Step 5: Solve for x
    x = 7,443,948,087.02/99,715.44
  6. Step 6: Final answer
    x = 74,651.91

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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.