Home / 75,621.20-113,383.20-31,265.60

Finding the Fourth Proportional to 75,621.20, 113,383.20 and 31,265.60

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Solution

The fourth proportional to 75,621.20, 113,383.20 and 31,265.60 is: 46,878.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621.20 : 113,383.20 = 31,265.60 : x
  2. Step 2: Convert to fraction form
    75,621.20/113,383.20 = 31,265.60/x
  3. Step 3: Cross multiply
    75,621.20x = 113,383.20 × 31,265.60
  4. Step 4: Simplify right side
    75,621.20x = 3,544,993,777.92
  5. Step 5: Solve for x
    x = 3,544,993,777.92/75,621.20
  6. Step 6: Final answer
    x = 46,878.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.