Home / 57,181.12-78,912.98-31,690.27

Finding the Fourth Proportional to 57,181.12, 78,912.98 and 31,690.27

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Solution

The fourth proportional to 57,181.12, 78,912.98 and 31,690.27 is: 43,734.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,181.12 : 78,912.98 = 31,690.27 : x
  2. Step 2: Convert to fraction form
    57,181.12/78,912.98 = 31,690.27/x
  3. Step 3: Cross multiply
    57,181.12x = 78,912.98 × 31,690.27
  4. Step 4: Simplify right side
    57,181.12x = 2,500,773,879.99
  5. Step 5: Solve for x
    x = 2,500,773,879.99/57,181.12
  6. Step 6: Final answer
    x = 43,734.26

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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.