Home / 85,450.08-117,920.44-49,661.04

Finding the Fourth Proportional to 85,450.08, 117,920.44 and 49,661.04

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Solution

The fourth proportional to 85,450.08, 117,920.44 and 49,661.04 is: 68,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.08 : 117,920.44 = 49,661.04 : x
  2. Step 2: Convert to fraction form
    85,450.08/117,920.44 = 49,661.04/x
  3. Step 3: Cross multiply
    85,450.08x = 117,920.44 × 49,661.04
  4. Step 4: Simplify right side
    85,450.08x = 5,856,051,687.66
  5. Step 5: Solve for x
    x = 5,856,051,687.66/85,450.08
  6. Step 6: Final answer
    x = 68,531.85

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1.5x scale

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.