Home / 68,621.80-102,923.10-21,879.40

Finding the Fourth Proportional to 68,621.80, 102,923.10 and 21,879.40

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Solution

The fourth proportional to 68,621.80, 102,923.10 and 21,879.40 is: 32,816.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,621.80 : 102,923.10 = 21,879.40 : x
  2. Step 2: Convert to fraction form
    68,621.80/102,923.10 = 21,879.40/x
  3. Step 3: Cross multiply
    68,621.80x = 102,923.10 × 21,879.40
  4. Step 4: Simplify right side
    68,621.80x = 2,251,895,674.14
  5. Step 5: Solve for x
    x = 2,251,895,674.14/68,621.80
  6. Step 6: Final answer
    x = 32,816.04

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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.