Home / 68,637.08-102,933.70-21,879

Finding the Fourth Proportional to 68,637.08, 102,933.70 and 21,879

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Solution

The fourth proportional to 68,637.08, 102,933.70 and 21,879 is: 32,811.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,637.08 : 102,933.70 = 21,879 : x
  2. Step 2: Convert to fraction form
    68,637.08/102,933.70 = 21,879/x
  3. Step 3: Cross multiply
    68,637.08x = 102,933.70 × 21,879
  4. Step 4: Simplify right side
    68,637.08x = 2,252,086,422.30
  5. Step 5: Solve for x
    x = 2,252,086,422.30/68,637.08
  6. Step 6: Final answer
    x = 32,811.51

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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.