Home / 45,489.12-62,751-31,317.36

Finding the Fourth Proportional to 45,489.12, 62,751 and 31,317.36

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Solution

The fourth proportional to 45,489.12, 62,751 and 31,317.36 is: 43,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,489.12 : 62,751 = 31,317.36 : x
  2. Step 2: Convert to fraction form
    45,489.12/62,751 = 31,317.36/x
  3. Step 3: Cross multiply
    45,489.12x = 62,751 × 31,317.36
  4. Step 4: Simplify right side
    45,489.12x = 1,965,195,657.36
  5. Step 5: Solve for x
    x = 1,965,195,657.36/45,489.12
  6. Step 6: Final answer
    x = 43,201.44

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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.