Home / 57,158.96-78,879.41-31,317.44

Finding the Fourth Proportional to 57,158.96, 78,879.41 and 31,317.44

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Solution

The fourth proportional to 57,158.96, 78,879.41 and 31,317.44 is: 43,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,158.96 : 78,879.41 = 31,317.44 : x
  2. Step 2: Convert to fraction form
    57,158.96/78,879.41 = 31,317.44/x
  3. Step 3: Cross multiply
    57,158.96x = 78,879.41 × 31,317.44
  4. Step 4: Simplify right side
    57,158.96x = 2,470,300,638.93
  5. Step 5: Solve for x
    x = 2,470,300,638.93/57,158.96
  6. Step 6: Final answer
    x = 43,218.09

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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.