Home / 86,087.10-118,766.19-49,781.88

Finding the Fourth Proportional to 86,087.10, 118,766.19 and 49,781.88

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Solution

The fourth proportional to 86,087.10, 118,766.19 and 49,781.88 is: 68,679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,087.10 : 118,766.19 = 49,781.88 : x
  2. Step 2: Convert to fraction form
    86,087.10/118,766.19 = 49,781.88/x
  3. Step 3: Cross multiply
    86,087.10x = 118,766.19 × 49,781.88
  4. Step 4: Simplify right side
    86,087.10x = 5,912,404,218.64
  5. Step 5: Solve for x
    x = 5,912,404,218.64/86,087.10
  6. Step 6: Final answer
    x = 68,679.33

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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.