Home / 85,420.08-117,872.92-49,604.20

Finding the Fourth Proportional to 85,420.08, 117,872.92 and 49,604.20

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Solution

The fourth proportional to 85,420.08, 117,872.92 and 49,604.20 is: 68,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,420.08 : 117,872.92 = 49,604.20 : x
  2. Step 2: Convert to fraction form
    85,420.08/117,872.92 = 49,604.20/x
  3. Step 3: Cross multiply
    85,420.08x = 117,872.92 × 49,604.20
  4. Step 4: Simplify right side
    85,420.08x = 5,846,991,898.26
  5. Step 5: Solve for x
    x = 5,846,991,898.26/85,420.08
  6. Step 6: Final answer
    x = 68,449.85

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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.