Home / 81,824.80-122,715.60-25,664.80

Finding the Fourth Proportional to 81,824.80, 122,715.60 and 25,664.80

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Solution

The fourth proportional to 81,824.80, 122,715.60 and 25,664.80 is: 38,490.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,824.80 : 122,715.60 = 25,664.80 : x
  2. Step 2: Convert to fraction form
    81,824.80/122,715.60 = 25,664.80/x
  3. Step 3: Cross multiply
    81,824.80x = 122,715.60 × 25,664.80
  4. Step 4: Simplify right side
    81,824.80x = 3,149,471,330.88
  5. Step 5: Solve for x
    x = 3,149,471,330.88/81,824.80
  6. Step 6: Final answer
    x = 38,490.43

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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.