Home / 31,160.97-42,977.88-27,579.78

Finding the Fourth Proportional to 31,160.97, 42,977.88 and 27,579.78

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Solution

The fourth proportional to 31,160.97, 42,977.88 and 27,579.78 is: 38,038.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,160.97 : 42,977.88 = 27,579.78 : x
  2. Step 2: Convert to fraction form
    31,160.97/42,977.88 = 27,579.78/x
  3. Step 3: Cross multiply
    31,160.97x = 42,977.88 × 27,579.78
  4. Step 4: Simplify right side
    31,160.97x = 1,185,320,475.27
  5. Step 5: Solve for x
    x = 1,185,320,475.27/31,160.97
  6. Step 6: Final answer
    x = 38,038.63

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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.