Home / 54,879-75,736.26-31,005.06

Finding the Fourth Proportional to 54,879, 75,736.26 and 31,005.06

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Solution

The fourth proportional to 54,879, 75,736.26 and 31,005.06 is: 42,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,879 : 75,736.26 = 31,005.06 : x
  2. Step 2: Convert to fraction form
    54,879/75,736.26 = 31,005.06/x
  3. Step 3: Cross multiply
    54,879x = 75,736.26 × 31,005.06
  4. Step 4: Simplify right side
    54,879x = 2,348,207,285.48
  5. Step 5: Solve for x
    x = 2,348,207,285.48/54,879
  6. Step 6: Final answer
    x = 42,788.81

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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.