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Finding the Fourth Proportional to 65,945.40, 90,992.67 and 36,874.29

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Solution

The fourth proportional to 65,945.40, 90,992.67 and 36,874.29 is: 50,879.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,945.40 : 90,992.67 = 36,874.29 : x
  2. Step 2: Convert to fraction form
    65,945.40/90,992.67 = 36,874.29/x
  3. Step 3: Cross multiply
    65,945.40x = 90,992.67 × 36,874.29
  4. Step 4: Simplify right side
    65,945.40x = 3,355,290,580.96
  5. Step 5: Solve for x
    x = 3,355,290,580.96/65,945.40
  6. Step 6: Final answer
    x = 50,879.82

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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.