Home / 82,485.54-113,923.30-55,581.34

Finding the Fourth Proportional to 82,485.54, 113,923.30 and 55,581.34

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Solution

The fourth proportional to 82,485.54, 113,923.30 and 55,581.34 is: 76,765.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,485.54 : 113,923.30 = 55,581.34 : x
  2. Step 2: Convert to fraction form
    82,485.54/113,923.30 = 55,581.34/x
  3. Step 3: Cross multiply
    82,485.54x = 113,923.30 × 55,581.34
  4. Step 4: Simplify right side
    82,485.54x = 6,332,009,671.22
  5. Step 5: Solve for x
    x = 6,332,009,671.22/82,485.54
  6. Step 6: Final answer
    x = 76,765.09

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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.