Home / 75,911.55-113,871.47-31,542.79

Finding the Fourth Proportional to 75,911.55, 113,871.47 and 31,542.79

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Solution

The fourth proportional to 75,911.55, 113,871.47 and 31,542.79 is: 47,315.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,911.55 : 113,871.47 = 31,542.79 : x
  2. Step 2: Convert to fraction form
    75,911.55/113,871.47 = 31,542.79/x
  3. Step 3: Cross multiply
    75,911.55x = 113,871.47 × 31,542.79
  4. Step 4: Simplify right side
    75,911.55x = 3,591,823,865.20
  5. Step 5: Solve for x
    x = 3,591,823,865.20/75,911.55
  6. Step 6: Final answer
    x = 47,315.91

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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.