Home / 68,777.43-103,145.59-20,744.03

Finding the Fourth Proportional to 68,777.43, 103,145.59 and 20,744.03

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Solution

The fourth proportional to 68,777.43, 103,145.59 and 20,744.03 is: 31,109.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777.43 : 103,145.59 = 20,744.03 : x
  2. Step 2: Convert to fraction form
    68,777.43/103,145.59 = 20,744.03/x
  3. Step 3: Cross multiply
    68,777.43x = 103,145.59 × 20,744.03
  4. Step 4: Simplify right side
    68,777.43x = 2,139,654,593.88
  5. Step 5: Solve for x
    x = 2,139,654,593.88/68,777.43
  6. Step 6: Final answer
    x = 31,109.84

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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.