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Finding the Fourth Proportional to 81,483.48, 122,035.68 and 79,241.22

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Solution

The fourth proportional to 81,483.48, 122,035.68 and 79,241.22 is: 118,677.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483.48 : 122,035.68 = 79,241.22 : x
  2. Step 2: Convert to fraction form
    81,483.48/122,035.68 = 79,241.22/x
  3. Step 3: Cross multiply
    81,483.48x = 122,035.68 × 79,241.22
  4. Step 4: Simplify right side
    81,483.48x = 9,670,256,166.73
  5. Step 5: Solve for x
    x = 9,670,256,166.73/81,483.48
  6. Step 6: Final answer
    x = 118,677.51

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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.