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Finding the Fourth Proportional to 73,200, 109,800.06 and 20,609.49

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Solution

The fourth proportional to 73,200, 109,800.06 and 20,609.49 is: 30,914.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,200 : 109,800.06 = 20,609.49 : x
  2. Step 2: Convert to fraction form
    73,200/109,800.06 = 20,609.49/x
  3. Step 3: Cross multiply
    73,200x = 109,800.06 × 20,609.49
  4. Step 4: Simplify right side
    73,200x = 2,262,923,238.57
  5. Step 5: Solve for x
    x = 2,262,923,238.57/73,200
  6. Step 6: Final answer
    x = 30,914.25

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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.