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Finding the Fourth Proportional to 86,169.86, 118,919.88 and 48,446.54

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Solution

The fourth proportional to 86,169.86, 118,919.88 and 48,446.54 is: 66,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,169.86 : 118,919.88 = 48,446.54 : x
  2. Step 2: Convert to fraction form
    86,169.86/118,919.88 = 48,446.54/x
  3. Step 3: Cross multiply
    86,169.86x = 118,919.88 × 48,446.54
  4. Step 4: Simplify right side
    86,169.86x = 5,761,256,723.22
  5. Step 5: Solve for x
    x = 5,761,256,723.22/86,169.86
  6. Step 6: Final answer
    x = 66,859.30

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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.