Home / 81,889.10-122,834.45-34,512.20

Finding the Fourth Proportional to 81,889.10, 122,834.45 and 34,512.20

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Solution

The fourth proportional to 81,889.10, 122,834.45 and 34,512.20 is: 51,768.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,889.10 : 122,834.45 = 34,512.20 : x
  2. Step 2: Convert to fraction form
    81,889.10/122,834.45 = 34,512.20/x
  3. Step 3: Cross multiply
    81,889.10x = 122,834.45 × 34,512.20
  4. Step 4: Simplify right side
    81,889.10x = 4,239,286,577.40
  5. Step 5: Solve for x
    x = 4,239,286,577.40/81,889.10
  6. Step 6: Final answer
    x = 51,768.63

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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.