Home / 82,383.22-113,782.20-55,478.92

Finding the Fourth Proportional to 82,383.22, 113,782.20 and 55,478.92

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Solution

The fourth proportional to 82,383.22, 113,782.20 and 55,478.92 is: 76,623.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,383.22 : 113,782.20 = 55,478.92 : x
  2. Step 2: Convert to fraction form
    82,383.22/113,782.20 = 55,478.92/x
  3. Step 3: Cross multiply
    82,383.22x = 113,782.20 × 55,478.92
  4. Step 4: Simplify right side
    82,383.22x = 6,312,513,571.22
  5. Step 5: Solve for x
    x = 6,312,513,571.22/82,383.22
  6. Step 6: Final answer
    x = 76,623.78

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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.