Home / 78,286.28-108,033.67-47,648.29

Finding the Fourth Proportional to 78,286.28, 108,033.67 and 47,648.29

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Solution

The fourth proportional to 78,286.28, 108,033.67 and 47,648.29 is: 65,753.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286.28 : 108,033.67 = 47,648.29 : x
  2. Step 2: Convert to fraction form
    78,286.28/108,033.67 = 47,648.29/x
  3. Step 3: Cross multiply
    78,286.28x = 108,033.67 × 47,648.29
  4. Step 4: Simplify right side
    78,286.28x = 5,147,619,637.92
  5. Step 5: Solve for x
    x = 5,147,619,637.92/78,286.28
  6. Step 6: Final answer
    x = 65,753.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.