Home / 53,989.58-80,990.32-20,738.18

Finding the Fourth Proportional to 53,989.58, 80,990.32 and 20,738.18

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Solution

The fourth proportional to 53,989.58, 80,990.32 and 20,738.18 is: 31,109.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,989.58 : 80,990.32 = 20,738.18 : x
  2. Step 2: Convert to fraction form
    53,989.58/80,990.32 = 20,738.18/x
  3. Step 3: Cross multiply
    53,989.58x = 80,990.32 × 20,738.18
  4. Step 4: Simplify right side
    53,989.58x = 1,679,591,834.42
  5. Step 5: Solve for x
    x = 1,679,591,834.42/53,989.58
  6. Step 6: Final answer
    x = 31,109.56

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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.