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Finding the Fourth Proportional to 81,164.80, 121,725.60 and 25,004.80

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Solution

The fourth proportional to 81,164.80, 121,725.60 and 25,004.80 is: 37,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.80 : 121,725.60 = 25,004.80 : x
  2. Step 2: Convert to fraction form
    81,164.80/121,725.60 = 25,004.80/x
  3. Step 3: Cross multiply
    81,164.80x = 121,725.60 × 25,004.80
  4. Step 4: Simplify right side
    81,164.80x = 3,043,724,282.88
  5. Step 5: Solve for x
    x = 3,043,724,282.88/81,164.80
  6. Step 6: Final answer
    x = 37,500.55

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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.