Home / 66,309.36-99,469.92-18,923.55

Finding the Fourth Proportional to 66,309.36, 99,469.92 and 18,923.55

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Solution

The fourth proportional to 66,309.36, 99,469.92 and 18,923.55 is: 28,387.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.36 : 99,469.92 = 18,923.55 : x
  2. Step 2: Convert to fraction form
    66,309.36/99,469.92 = 18,923.55/x
  3. Step 3: Cross multiply
    66,309.36x = 99,469.92 × 18,923.55
  4. Step 4: Simplify right side
    66,309.36x = 1,882,324,004.62
  5. Step 5: Solve for x
    x = 1,882,324,004.62/66,309.36
  6. Step 6: Final answer
    x = 28,387.00

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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.