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Finding the Fourth Proportional to 90,852, 125,375.84 and 51,108

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Solution

The fourth proportional to 90,852, 125,375.84 and 51,108 is: 70,529.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,852 : 125,375.84 = 51,108 : x
  2. Step 2: Convert to fraction form
    90,852/125,375.84 = 51,108/x
  3. Step 3: Cross multiply
    90,852x = 125,375.84 × 51,108
  4. Step 4: Simplify right side
    90,852x = 6,407,708,430.72
  5. Step 5: Solve for x
    x = 6,407,708,430.72/90,852
  6. Step 6: Final answer
    x = 70,529.09

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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.