Home / 81,776.13-122,664.20-25,616.71

Finding the Fourth Proportional to 81,776.13, 122,664.20 and 25,616.71

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Solution

The fourth proportional to 81,776.13, 122,664.20 and 25,616.71 is: 38,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,776.13 : 122,664.20 = 25,616.71 : x
  2. Step 2: Convert to fraction form
    81,776.13/122,664.20 = 25,616.71/x
  3. Step 3: Cross multiply
    81,776.13x = 122,664.20 × 25,616.71
  4. Step 4: Simplify right side
    81,776.13x = 3,142,253,238.78
  5. Step 5: Solve for x
    x = 3,142,253,238.78/81,776.13
  6. Step 6: Final answer
    x = 38,425.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.