Home / 53,153.43-79,739.96-21,991.11

Finding the Fourth Proportional to 53,153.43, 79,739.96 and 21,991.11

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Solution

The fourth proportional to 53,153.43, 79,739.96 and 21,991.11 is: 32,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,153.43 : 79,739.96 = 21,991.11 : x
  2. Step 2: Convert to fraction form
    53,153.43/79,739.96 = 21,991.11/x
  3. Step 3: Cross multiply
    53,153.43x = 79,739.96 × 21,991.11
  4. Step 4: Simplify right side
    53,153.43x = 1,753,570,121.80
  5. Step 5: Solve for x
    x = 1,753,570,121.80/53,153.43
  6. Step 6: Final answer
    x = 32,990.72

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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.