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Finding the Fourth Proportional to 90,992.72, 125,503.12 and 60,310.33

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Solution

The fourth proportional to 90,992.72, 125,503.12 and 60,310.33 is: 83,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992.72 : 125,503.12 = 60,310.33 : x
  2. Step 2: Convert to fraction form
    90,992.72/125,503.12 = 60,310.33/x
  3. Step 3: Cross multiply
    90,992.72x = 125,503.12 × 60,310.33
  4. Step 4: Simplify right side
    90,992.72x = 7,569,134,583.23
  5. Step 5: Solve for x
    x = 7,569,134,583.23/90,992.72
  6. Step 6: Final answer
    x = 83,183.96

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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.