Home / 69,977.12-104,965.79-21,290.85

Finding the Fourth Proportional to 69,977.12, 104,965.79 and 21,290.85

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Solution

The fourth proportional to 69,977.12, 104,965.79 and 21,290.85 is: 31,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,977.12 : 104,965.79 = 21,290.85 : x
  2. Step 2: Convert to fraction form
    69,977.12/104,965.79 = 21,290.85/x
  3. Step 3: Cross multiply
    69,977.12x = 104,965.79 × 21,290.85
  4. Step 4: Simplify right side
    69,977.12x = 2,234,810,783.57
  5. Step 5: Solve for x
    x = 2,234,810,783.57/69,977.12
  6. Step 6: Final answer
    x = 31,936.31

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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.