Home / 85,212.51-117,591.65-49,405.85

Finding the Fourth Proportional to 85,212.51, 117,591.65 and 49,405.85

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Solution

The fourth proportional to 85,212.51, 117,591.65 and 49,405.85 is: 68,179.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212.51 : 117,591.65 = 49,405.85 : x
  2. Step 2: Convert to fraction form
    85,212.51/117,591.65 = 49,405.85/x
  3. Step 3: Cross multiply
    85,212.51x = 117,591.65 × 49,405.85
  4. Step 4: Simplify right side
    85,212.51x = 5,809,715,212.41
  5. Step 5: Solve for x
    x = 5,809,715,212.41/85,212.51
  6. Step 6: Final answer
    x = 68,179.14

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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.