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Finding the Fourth Proportional to 85,062.52, 127,640.77 and 35,131

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Solution

The fourth proportional to 85,062.52, 127,640.77 and 35,131 is: 52,715.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,062.52 : 127,640.77 = 35,131 : x
  2. Step 2: Convert to fraction form
    85,062.52/127,640.77 = 35,131/x
  3. Step 3: Cross multiply
    85,062.52x = 127,640.77 × 35,131
  4. Step 4: Simplify right side
    85,062.52x = 4,484,147,890.87
  5. Step 5: Solve for x
    x = 4,484,147,890.87/85,062.52
  6. Step 6: Final answer
    x = 52,715.91

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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.