Home / 83,277.11-124,910.80-20,942.75

Finding the Fourth Proportional to 83,277.11, 124,910.80 and 20,942.75

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Solution

The fourth proportional to 83,277.11, 124,910.80 and 20,942.75 is: 31,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,277.11 : 124,910.80 = 20,942.75 : x
  2. Step 2: Convert to fraction form
    83,277.11/124,910.80 = 20,942.75/x
  3. Step 3: Cross multiply
    83,277.11x = 124,910.80 × 20,942.75
  4. Step 4: Simplify right side
    83,277.11x = 2,615,975,656.70
  5. Step 5: Solve for x
    x = 2,615,975,656.70/83,277.11
  6. Step 6: Final answer
    x = 31,412.90

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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.