Home / 54,128.02-81,171.25-18,582.72

Finding the Fourth Proportional to 54,128.02, 81,171.25 and 18,582.72

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Solution

The fourth proportional to 54,128.02, 81,171.25 and 18,582.72 is: 27,866.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128.02 : 81,171.25 = 18,582.72 : x
  2. Step 2: Convert to fraction form
    54,128.02/81,171.25 = 18,582.72/x
  3. Step 3: Cross multiply
    54,128.02x = 81,171.25 × 18,582.72
  4. Step 4: Simplify right side
    54,128.02x = 1,508,382,610.80
  5. Step 5: Solve for x
    x = 1,508,382,610.80/54,128.02
  6. Step 6: Final answer
    x = 27,866.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.