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Finding the Fourth Proportional to 71,767.44, 99,037.76 and 39,936.06

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Solution

The fourth proportional to 71,767.44, 99,037.76 and 39,936.06 is: 55,111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,767.44 : 99,037.76 = 39,936.06 : x
  2. Step 2: Convert to fraction form
    71,767.44/99,037.76 = 39,936.06/x
  3. Step 3: Cross multiply
    71,767.44x = 99,037.76 × 39,936.06
  4. Step 4: Simplify right side
    71,767.44x = 3,955,177,725.95
  5. Step 5: Solve for x
    x = 3,955,177,725.95/71,767.44
  6. Step 6: Final answer
    x = 55,111.03

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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.