Home / 81,738.52-112,809.58-49,900.60

Finding the Fourth Proportional to 81,738.52, 112,809.58 and 49,900.60

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Solution

The fourth proportional to 81,738.52, 112,809.58 and 49,900.60 is: 68,869.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.52 : 112,809.58 = 49,900.60 : x
  2. Step 2: Convert to fraction form
    81,738.52/112,809.58 = 49,900.60/x
  3. Step 3: Cross multiply
    81,738.52x = 112,809.58 × 49,900.60
  4. Step 4: Simplify right side
    81,738.52x = 5,629,265,727.75
  5. Step 5: Solve for x
    x = 5,629,265,727.75/81,738.52
  6. Step 6: Final answer
    x = 68,869.19

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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.