Home / 69,811.19-104,685.72-19,879.95

Finding the Fourth Proportional to 69,811.19, 104,685.72 and 19,879.95

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Solution

The fourth proportional to 69,811.19, 104,685.72 and 19,879.95 is: 29,811.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,811.19 : 104,685.72 = 19,879.95 : x
  2. Step 2: Convert to fraction form
    69,811.19/104,685.72 = 19,879.95/x
  3. Step 3: Cross multiply
    69,811.19x = 104,685.72 × 19,879.95
  4. Step 4: Simplify right side
    69,811.19x = 2,081,146,879.31
  5. Step 5: Solve for x
    x = 2,081,146,879.31/69,811.19
  6. Step 6: Final answer
    x = 29,811.08

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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.