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Finding the Fourth Proportional to 128,796.76, 193,195.86 and 58,627

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Solution

The fourth proportional to 128,796.76, 193,195.86 and 58,627 is: 87,940.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,796.76 : 193,195.86 = 58,627 : x
  2. Step 2: Convert to fraction form
    128,796.76/193,195.86 = 58,627/x
  3. Step 3: Cross multiply
    128,796.76x = 193,195.86 × 58,627
  4. Step 4: Simplify right side
    128,796.76x = 11,326,493,684.22
  5. Step 5: Solve for x
    x = 11,326,493,684.22/128,796.76
  6. Step 6: Final answer
    x = 87,940.83

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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.