Home / 68,669.12-102,937.92-21,891.68

Finding the Fourth Proportional to 68,669.12, 102,937.92 and 21,891.68

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Solution

The fourth proportional to 68,669.12, 102,937.92 and 21,891.68 is: 32,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,669.12 : 102,937.92 = 21,891.68 : x
  2. Step 2: Convert to fraction form
    68,669.12/102,937.92 = 21,891.68/x
  3. Step 3: Cross multiply
    68,669.12x = 102,937.92 × 21,891.68
  4. Step 4: Simplify right side
    68,669.12x = 2,253,484,004.51
  5. Step 5: Solve for x
    x = 2,253,484,004.51/68,669.12
  6. Step 6: Final answer
    x = 32,816.56

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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.