Home / 57,181.20-78,907.74-31,687.94

Finding the Fourth Proportional to 57,181.20, 78,907.74 and 31,687.94

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Solution

The fourth proportional to 57,181.20, 78,907.74 and 31,687.94 is: 43,728.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,181.20 : 78,907.74 = 31,687.94 : x
  2. Step 2: Convert to fraction form
    57,181.20/78,907.74 = 31,687.94/x
  3. Step 3: Cross multiply
    57,181.20x = 78,907.74 × 31,687.94
  4. Step 4: Simplify right side
    57,181.20x = 2,500,423,336.12
  5. Step 5: Solve for x
    x = 2,500,423,336.12/57,181.20
  6. Step 6: Final answer
    x = 43,728.07

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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.