Home / 85,143.72-117,375.57-59,570.85

Finding the Fourth Proportional to 85,143.72, 117,375.57 and 59,570.85

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Solution

The fourth proportional to 85,143.72, 117,375.57 and 59,570.85 is: 82,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,143.72 : 117,375.57 = 59,570.85 : x
  2. Step 2: Convert to fraction form
    85,143.72/117,375.57 = 59,570.85/x
  3. Step 3: Cross multiply
    85,143.72x = 117,375.57 × 59,570.85
  4. Step 4: Simplify right side
    85,143.72x = 6,992,162,474.13
  5. Step 5: Solve for x
    x = 6,992,162,474.13/85,143.72
  6. Step 6: Final answer
    x = 82,121.88

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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.