Home / 82,887.20-124,328.56-20,556.96

Finding the Fourth Proportional to 82,887.20, 124,328.56 and 20,556.96

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Solution

The fourth proportional to 82,887.20, 124,328.56 and 20,556.96 is: 30,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,887.20 : 124,328.56 = 20,556.96 : x
  2. Step 2: Convert to fraction form
    82,887.20/124,328.56 = 20,556.96/x
  3. Step 3: Cross multiply
    82,887.20x = 124,328.56 × 20,556.96
  4. Step 4: Simplify right side
    82,887.20x = 2,555,817,234.78
  5. Step 5: Solve for x
    x = 2,555,817,234.78/82,887.20
  6. Step 6: Final answer
    x = 30,834.88

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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.