Home / 81,855.89-122,771.67-22,685.39

Finding the Fourth Proportional to 81,855.89, 122,771.67 and 22,685.39

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Solution

The fourth proportional to 81,855.89, 122,771.67 and 22,685.39 is: 34,024.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,855.89 : 122,771.67 = 22,685.39 : x
  2. Step 2: Convert to fraction form
    81,855.89/122,771.67 = 22,685.39/x
  3. Step 3: Cross multiply
    81,855.89x = 122,771.67 × 22,685.39
  4. Step 4: Simplify right side
    81,855.89x = 2,785,123,214.90
  5. Step 5: Solve for x
    x = 2,785,123,214.90/81,855.89
  6. Step 6: Final answer
    x = 34,024.71

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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.