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Finding the Fourth Proportional to 81,696.45, 122,372.46 and 37,360.53

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Solution

The fourth proportional to 81,696.45, 122,372.46 and 37,360.53 is: 55,962.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,696.45 : 122,372.46 = 37,360.53 : x
  2. Step 2: Convert to fraction form
    81,696.45/122,372.46 = 37,360.53/x
  3. Step 3: Cross multiply
    81,696.45x = 122,372.46 × 37,360.53
  4. Step 4: Simplify right side
    81,696.45x = 4,571,899,963.00
  5. Step 5: Solve for x
    x = 4,571,899,963.00/81,696.45
  6. Step 6: Final answer
    x = 55,962.04

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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.