Home / 81,450.64-112,401.73-49,619.54

Finding the Fourth Proportional to 81,450.64, 112,401.73 and 49,619.54

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Solution

The fourth proportional to 81,450.64, 112,401.73 and 49,619.54 is: 68,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,450.64 : 112,401.73 = 49,619.54 : x
  2. Step 2: Convert to fraction form
    81,450.64/112,401.73 = 49,619.54/x
  3. Step 3: Cross multiply
    81,450.64x = 112,401.73 × 49,619.54
  4. Step 4: Simplify right side
    81,450.64x = 5,577,322,137.80
  5. Step 5: Solve for x
    x = 5,577,322,137.80/81,450.64
  6. Step 6: Final answer
    x = 68,474.87

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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.