Home / 85,450.90-117,918.63-49,149.58

Finding the Fourth Proportional to 85,450.90, 117,918.63 and 49,149.58

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Solution

The fourth proportional to 85,450.90, 117,918.63 and 49,149.58 is: 67,824.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.90 : 117,918.63 = 49,149.58 : x
  2. Step 2: Convert to fraction form
    85,450.90/117,918.63 = 49,149.58/x
  3. Step 3: Cross multiply
    85,450.90x = 117,918.63 × 49,149.58
  4. Step 4: Simplify right side
    85,450.90x = 5,795,651,138.68
  5. Step 5: Solve for x
    x = 5,795,651,138.68/85,450.90
  6. Step 6: Final answer
    x = 67,824.34

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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.