Home / 81,921.53-122,930.05-34,533.71

Finding the Fourth Proportional to 81,921.53, 122,930.05 and 34,533.71

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Solution

The fourth proportional to 81,921.53, 122,930.05 and 34,533.71 is: 51,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.53 : 122,930.05 = 34,533.71 : x
  2. Step 2: Convert to fraction form
    81,921.53/122,930.05 = 34,533.71/x
  3. Step 3: Cross multiply
    81,921.53x = 122,930.05 × 34,533.71
  4. Step 4: Simplify right side
    81,921.53x = 4,245,230,917.98
  5. Step 5: Solve for x
    x = 4,245,230,917.98/81,921.53
  6. Step 6: Final answer
    x = 51,820.70

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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.