Home / 54,879.51-75,735.21-31,005.68

Finding the Fourth Proportional to 54,879.51, 75,735.21 and 31,005.68

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Solution

The fourth proportional to 54,879.51, 75,735.21 and 31,005.68 is: 42,788.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,879.51 : 75,735.21 = 31,005.68 : x
  2. Step 2: Convert to fraction form
    54,879.51/75,735.21 = 31,005.68/x
  3. Step 3: Cross multiply
    54,879.51x = 75,735.21 × 31,005.68
  4. Step 4: Simplify right side
    54,879.51x = 2,348,221,307.32
  5. Step 5: Solve for x
    x = 2,348,221,307.32/54,879.51
  6. Step 6: Final answer
    x = 42,788.67

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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.