Home / 69,331.44-103,989.12-19,415.53

Finding the Fourth Proportional to 69,331.44, 103,989.12 and 19,415.53

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Solution

The fourth proportional to 69,331.44, 103,989.12 and 19,415.53 is: 29,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,331.44 : 103,989.12 = 19,415.53 : x
  2. Step 2: Convert to fraction form
    69,331.44/103,989.12 = 19,415.53/x
  3. Step 3: Cross multiply
    69,331.44x = 103,989.12 × 19,415.53
  4. Step 4: Simplify right side
    69,331.44x = 2,019,003,879.03
  5. Step 5: Solve for x
    x = 2,019,003,879.03/69,331.44
  6. Step 6: Final answer
    x = 29,121.04

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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.