Home / 57,155.42-78,873.45-31,661.71

Finding the Fourth Proportional to 57,155.42, 78,873.45 and 31,661.71

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Solution

The fourth proportional to 57,155.42, 78,873.45 and 31,661.71 is: 43,692.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,155.42 : 78,873.45 = 31,661.71 : x
  2. Step 2: Convert to fraction form
    57,155.42/78,873.45 = 31,661.71/x
  3. Step 3: Cross multiply
    57,155.42x = 78,873.45 × 31,661.71
  4. Step 4: Simplify right side
    57,155.42x = 2,497,268,103.42
  5. Step 5: Solve for x
    x = 2,497,268,103.42/57,155.42
  6. Step 6: Final answer
    x = 43,692.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.