Home / 69,910.24-104,847.73-19,990.60

Finding the Fourth Proportional to 69,910.24, 104,847.73 and 19,990.60

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Solution

The fourth proportional to 69,910.24, 104,847.73 and 19,990.60 is: 29,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,910.24 : 104,847.73 = 19,990.60 : x
  2. Step 2: Convert to fraction form
    69,910.24/104,847.73 = 19,990.60/x
  3. Step 3: Cross multiply
    69,910.24x = 104,847.73 × 19,990.60
  4. Step 4: Simplify right side
    69,910.24x = 2,095,969,031.34
  5. Step 5: Solve for x
    x = 2,095,969,031.34/69,910.24
  6. Step 6: Final answer
    x = 29,980.86

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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.