Home / 55,431.48-83,095.38-20,361.72

Finding the Fourth Proportional to 55,431.48, 83,095.38 and 20,361.72

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Solution

The fourth proportional to 55,431.48, 83,095.38 and 20,361.72 is: 30,523.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,431.48 : 83,095.38 = 20,361.72 : x
  2. Step 2: Convert to fraction form
    55,431.48/83,095.38 = 20,361.72/x
  3. Step 3: Cross multiply
    55,431.48x = 83,095.38 × 20,361.72
  4. Step 4: Simplify right side
    55,431.48x = 1,691,964,860.85
  5. Step 5: Solve for x
    x = 1,691,964,860.85/55,431.48
  6. Step 6: Final answer
    x = 30,523.54

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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.