Home / 55,118.20-82,709.70-20,061.40

Finding the Fourth Proportional to 55,118.20, 82,709.70 and 20,061.40

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Solution

The fourth proportional to 55,118.20, 82,709.70 and 20,061.40 is: 30,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,118.20 : 82,709.70 = 20,061.40 : x
  2. Step 2: Convert to fraction form
    55,118.20/82,709.70 = 20,061.40/x
  3. Step 3: Cross multiply
    55,118.20x = 82,709.70 × 20,061.40
  4. Step 4: Simplify right side
    55,118.20x = 1,659,272,375.58
  5. Step 5: Solve for x
    x = 1,659,272,375.58/55,118.20
  6. Step 6: Final answer
    x = 30,103.89

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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.