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Finding the Fourth Proportional to 66,185.70, 91,335.87 and 35,971.26

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Solution

The fourth proportional to 66,185.70, 91,335.87 and 35,971.26 is: 49,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,185.70 : 91,335.87 = 35,971.26 : x
  2. Step 2: Convert to fraction form
    66,185.70/91,335.87 = 35,971.26/x
  3. Step 3: Cross multiply
    66,185.70x = 91,335.87 × 35,971.26
  4. Step 4: Simplify right side
    66,185.70x = 3,285,466,327.10
  5. Step 5: Solve for x
    x = 3,285,466,327.10/66,185.70
  6. Step 6: Final answer
    x = 49,640.12

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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.