Home / 57,154.66-78,872.58-31,660.95

Finding the Fourth Proportional to 57,154.66, 78,872.58 and 31,660.95

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Solution

The fourth proportional to 57,154.66, 78,872.58 and 31,660.95 is: 43,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.66 : 78,872.58 = 31,660.95 : x
  2. Step 2: Convert to fraction form
    57,154.66/78,872.58 = 31,660.95/x
  3. Step 3: Cross multiply
    57,154.66x = 78,872.58 × 31,660.95
  4. Step 4: Simplify right side
    57,154.66x = 2,497,180,851.33
  5. Step 5: Solve for x
    x = 2,497,180,851.33/57,154.66
  6. Step 6: Final answer
    x = 43,691.64

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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.