Home / 43,579.76-65,376.12-20,208.56

Finding the Fourth Proportional to 43,579.76, 65,376.12 and 20,208.56

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Solution

The fourth proportional to 43,579.76, 65,376.12 and 20,208.56 is: 30,315.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,579.76 : 65,376.12 = 20,208.56 : x
  2. Step 2: Convert to fraction form
    43,579.76/65,376.12 = 20,208.56/x
  3. Step 3: Cross multiply
    43,579.76x = 65,376.12 × 20,208.56
  4. Step 4: Simplify right side
    43,579.76x = 1,321,157,243.59
  5. Step 5: Solve for x
    x = 1,321,157,243.59/43,579.76
  6. Step 6: Final answer
    x = 30,315.84

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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.