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Finding the Fourth Proportional to 61,249, 91,873.50 and 19,696

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Solution

The fourth proportional to 61,249, 91,873.50 and 19,696 is: 29,544

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,249 : 91,873.50 = 19,696 : x
  2. Step 2: Convert to fraction form
    61,249/91,873.50 = 19,696/x
  3. Step 3: Cross multiply
    61,249x = 91,873.50 × 19,696
  4. Step 4: Simplify right side
    61,249x = 1,809,540,456
  5. Step 5: Solve for x
    x = 1,809,540,456/61,249
  6. Step 6: Final answer
    x = 29,544

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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.