Home / 51,979.20-71,687.52-40,029.12

Finding the Fourth Proportional to 51,979.20, 71,687.52 and 40,029.12

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Solution

The fourth proportional to 51,979.20, 71,687.52 and 40,029.12 is: 55,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,979.20 : 71,687.52 = 40,029.12 : x
  2. Step 2: Convert to fraction form
    51,979.20/71,687.52 = 40,029.12/x
  3. Step 3: Cross multiply
    51,979.20x = 71,687.52 × 40,029.12
  4. Step 4: Simplify right side
    51,979.20x = 2,869,588,340.58
  5. Step 5: Solve for x
    x = 2,869,588,340.58/51,979.20
  6. Step 6: Final answer
    x = 55,206.47

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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.