Home / 75,749.79-113,629.36-31,380.02

Finding the Fourth Proportional to 75,749.79, 113,629.36 and 31,380.02

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Solution

The fourth proportional to 75,749.79, 113,629.36 and 31,380.02 is: 47,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,749.79 : 113,629.36 = 31,380.02 : x
  2. Step 2: Convert to fraction form
    75,749.79/113,629.36 = 31,380.02/x
  3. Step 3: Cross multiply
    75,749.79x = 113,629.36 × 31,380.02
  4. Step 4: Simplify right side
    75,749.79x = 3,565,691,589.39
  5. Step 5: Solve for x
    x = 3,565,691,589.39/75,749.79
  6. Step 6: Final answer
    x = 47,071.97

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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.