Home / 69,415.40-104,112.30-19,490.60

Finding the Fourth Proportional to 69,415.40, 104,112.30 and 19,490.60

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Solution

The fourth proportional to 69,415.40, 104,112.30 and 19,490.60 is: 29,232.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,415.40 : 104,112.30 = 19,490.60 : x
  2. Step 2: Convert to fraction form
    69,415.40/104,112.30 = 19,490.60/x
  3. Step 3: Cross multiply
    69,415.40x = 104,112.30 × 19,490.60
  4. Step 4: Simplify right side
    69,415.40x = 2,029,211,194.38
  5. Step 5: Solve for x
    x = 2,029,211,194.38/69,415.40
  6. Step 6: Final answer
    x = 29,232.87

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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.