Home / 57,105.93-85,664.64-19,661.05

Finding the Fourth Proportional to 57,105.93, 85,664.64 and 19,661.05

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Solution

The fourth proportional to 57,105.93, 85,664.64 and 19,661.05 is: 29,493.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,105.93 : 85,664.64 = 19,661.05 : x
  2. Step 2: Convert to fraction form
    57,105.93/85,664.64 = 19,661.05/x
  3. Step 3: Cross multiply
    57,105.93x = 85,664.64 × 19,661.05
  4. Step 4: Simplify right side
    57,105.93x = 1,684,256,770.27
  5. Step 5: Solve for x
    x = 1,684,256,770.27/57,105.93
  6. Step 6: Final answer
    x = 29,493.55

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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.