Home / 83,708.25-115,519.42-47,909.79

Finding the Fourth Proportional to 83,708.25, 115,519.42 and 47,909.79

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Solution

The fourth proportional to 83,708.25, 115,519.42 and 47,909.79 is: 66,116.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,708.25 : 115,519.42 = 47,909.79 : x
  2. Step 2: Convert to fraction form
    83,708.25/115,519.42 = 47,909.79/x
  3. Step 3: Cross multiply
    83,708.25x = 115,519.42 × 47,909.79
  4. Step 4: Simplify right side
    83,708.25x = 5,534,511,153.12
  5. Step 5: Solve for x
    x = 5,534,511,153.12/83,708.25
  6. Step 6: Final answer
    x = 66,116.67

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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.