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Finding the Fourth Proportional to 101,505.78, 140,077.26 and 58,469.58

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Solution

The fourth proportional to 101,505.78, 140,077.26 and 58,469.58 is: 80,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,505.78 : 140,077.26 = 58,469.58 : x
  2. Step 2: Convert to fraction form
    101,505.78/140,077.26 = 58,469.58/x
  3. Step 3: Cross multiply
    101,505.78x = 140,077.26 × 58,469.58
  4. Step 4: Simplify right side
    101,505.78x = 8,190,258,559.75
  5. Step 5: Solve for x
    x = 8,190,258,559.75/101,505.78
  6. Step 6: Final answer
    x = 80,687.61

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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.