Home / 81,771.92-122,705.47-34,383.59

Finding the Fourth Proportional to 81,771.92, 122,705.47 and 34,383.59

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Solution

The fourth proportional to 81,771.92, 122,705.47 and 34,383.59 is: 51,595.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,771.92 : 122,705.47 = 34,383.59 : x
  2. Step 2: Convert to fraction form
    81,771.92/122,705.47 = 34,383.59/x
  3. Step 3: Cross multiply
    81,771.92x = 122,705.47 × 34,383.59
  4. Step 4: Simplify right side
    81,771.92x = 4,219,053,871.75
  5. Step 5: Solve for x
    x = 4,219,053,871.75/81,771.92
  6. Step 6: Final answer
    x = 51,595.39

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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.