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Finding the Fourth Proportional to 100,691.57, 151,027.58 and 30,571.49

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Solution

The fourth proportional to 100,691.57, 151,027.58 and 30,571.49 is: 45,854.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,691.57 : 151,027.58 = 30,571.49 : x
  2. Step 2: Convert to fraction form
    100,691.57/151,027.58 = 30,571.49/x
  3. Step 3: Cross multiply
    100,691.57x = 151,027.58 × 30,571.49
  4. Step 4: Simplify right side
    100,691.57x = 4,617,137,472.99
  5. Step 5: Solve for x
    x = 4,617,137,472.99/100,691.57
  6. Step 6: Final answer
    x = 45,854.26

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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.