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Finding the Fourth Proportional to 86,105.93, 118,821.62 and 48,377.75

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Solution

The fourth proportional to 86,105.93, 118,821.62 and 48,377.75 is: 66,758.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,105.93 : 118,821.62 = 48,377.75 : x
  2. Step 2: Convert to fraction form
    86,105.93/118,821.62 = 48,377.75/x
  3. Step 3: Cross multiply
    86,105.93x = 118,821.62 × 48,377.75
  4. Step 4: Simplify right side
    86,105.93x = 5,748,322,385.07
  5. Step 5: Solve for x
    x = 5,748,322,385.07/86,105.93
  6. Step 6: Final answer
    x = 66,758.73

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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.