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Finding the Fourth Proportional to 90,092.55, 135,151.25 and 30,920.54

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Solution

The fourth proportional to 90,092.55, 135,151.25 and 30,920.54 is: 46,385.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,092.55 : 135,151.25 = 30,920.54 : x
  2. Step 2: Convert to fraction form
    90,092.55/135,151.25 = 30,920.54/x
  3. Step 3: Cross multiply
    90,092.55x = 135,151.25 × 30,920.54
  4. Step 4: Simplify right side
    90,092.55x = 4,178,948,844.80
  5. Step 5: Solve for x
    x = 4,178,948,844.80/90,092.55
  6. Step 6: Final answer
    x = 46,385.06

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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.