Home / 75,871.74-113,743.34-31,470.78

Finding the Fourth Proportional to 75,871.74, 113,743.34 and 31,470.78

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Solution

The fourth proportional to 75,871.74, 113,743.34 and 31,470.78 is: 47,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,871.74 : 113,743.34 = 31,470.78 : x
  2. Step 2: Convert to fraction form
    75,871.74/113,743.34 = 31,470.78/x
  3. Step 3: Cross multiply
    75,871.74x = 113,743.34 × 31,470.78
  4. Step 4: Simplify right side
    75,871.74x = 3,579,591,629.61
  5. Step 5: Solve for x
    x = 3,579,591,629.61/75,871.74
  6. Step 6: Final answer
    x = 47,179.51

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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.