Home / 56,619.76-78,135.30-31,469.24

Finding the Fourth Proportional to 56,619.76, 78,135.30 and 31,469.24

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Solution

The fourth proportional to 56,619.76, 78,135.30 and 31,469.24 is: 43,427.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,619.76 : 78,135.30 = 31,469.24 : x
  2. Step 2: Convert to fraction form
    56,619.76/78,135.30 = 31,469.24/x
  3. Step 3: Cross multiply
    56,619.76x = 78,135.30 × 31,469.24
  4. Step 4: Simplify right side
    56,619.76x = 2,458,858,508.17
  5. Step 5: Solve for x
    x = 2,458,858,508.17/56,619.76
  6. Step 6: Final answer
    x = 43,427.57

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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.