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Finding the Fourth Proportional to 43,959.45, 65,900.30 and 20,579.61

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Solution

The fourth proportional to 43,959.45, 65,900.30 and 20,579.61 is: 30,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,959.45 : 65,900.30 = 20,579.61 : x
  2. Step 2: Convert to fraction form
    43,959.45/65,900.30 = 20,579.61/x
  3. Step 3: Cross multiply
    43,959.45x = 65,900.30 × 20,579.61
  4. Step 4: Simplify right side
    43,959.45x = 1,356,202,369.98
  5. Step 5: Solve for x
    x = 1,356,202,369.98/43,959.45
  6. Step 6: Final answer
    x = 30,851.21

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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.