Home / 75,840.72-113,761.14-31,455.56

Finding the Fourth Proportional to 75,840.72, 113,761.14 and 31,455.56

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Solution

The fourth proportional to 75,840.72, 113,761.14 and 31,455.56 is: 47,183.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,840.72 : 113,761.14 = 31,455.56 : x
  2. Step 2: Convert to fraction form
    75,840.72/113,761.14 = 31,455.56/x
  3. Step 3: Cross multiply
    75,840.72x = 113,761.14 × 31,455.56
  4. Step 4: Simplify right side
    75,840.72x = 3,578,420,364.94
  5. Step 5: Solve for x
    x = 3,578,420,364.94/75,840.72
  6. Step 6: Final answer
    x = 47,183.36

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1.5x scale

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.