Home / 57,154.73-78,867.47-31,660.38

Finding the Fourth Proportional to 57,154.73, 78,867.47 and 31,660.38

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Solution

The fourth proportional to 57,154.73, 78,867.47 and 31,660.38 is: 43,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.73 : 78,867.47 = 31,660.38 : x
  2. Step 2: Convert to fraction form
    57,154.73/78,867.47 = 31,660.38/x
  3. Step 3: Cross multiply
    57,154.73x = 78,867.47 × 31,660.38
  4. Step 4: Simplify right side
    57,154.73x = 2,496,974,148.99
  5. Step 5: Solve for x
    x = 2,496,974,148.99/57,154.73
  6. Step 6: Final answer
    x = 43,687.97

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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.