Home / 57,135.58-78,847.44-31,642.72

Finding the Fourth Proportional to 57,135.58, 78,847.44 and 31,642.72

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Solution

The fourth proportional to 57,135.58, 78,847.44 and 31,642.72 is: 43,667.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,135.58 : 78,847.44 = 31,642.72 : x
  2. Step 2: Convert to fraction form
    57,135.58/78,847.44 = 31,642.72/x
  3. Step 3: Cross multiply
    57,135.58x = 78,847.44 × 31,642.72
  4. Step 4: Simplify right side
    57,135.58x = 2,494,947,466.64
  5. Step 5: Solve for x
    x = 2,494,947,466.64/57,135.58
  6. Step 6: Final answer
    x = 43,667.14

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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.