Home / 45,243.36-67,896.12-20,311.20

Finding the Fourth Proportional to 45,243.36, 67,896.12 and 20,311.20

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Solution

The fourth proportional to 45,243.36, 67,896.12 and 20,311.20 is: 30,480.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,243.36 : 67,896.12 = 20,311.20 : x
  2. Step 2: Convert to fraction form
    45,243.36/67,896.12 = 20,311.20/x
  3. Step 3: Cross multiply
    45,243.36x = 67,896.12 × 20,311.20
  4. Step 4: Simplify right side
    45,243.36x = 1,379,051,672.54
  5. Step 5: Solve for x
    x = 1,379,051,672.54/45,243.36
  6. Step 6: Final answer
    x = 30,480.75

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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.