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Finding the Fourth Proportional to 123,954.78, 185,945.39 and 39,684.81

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Solution

The fourth proportional to 123,954.78, 185,945.39 and 39,684.81 is: 59,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,954.78 : 185,945.39 = 39,684.81 : x
  2. Step 2: Convert to fraction form
    123,954.78/185,945.39 = 39,684.81/x
  3. Step 3: Cross multiply
    123,954.78x = 185,945.39 × 39,684.81
  4. Step 4: Simplify right side
    123,954.78x = 7,379,207,472.53
  5. Step 5: Solve for x
    x = 7,379,207,472.53/123,954.78
  6. Step 6: Final answer
    x = 59,531.45

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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.