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Finding the Fourth Proportional to 81,911.54, 122,718.99 and 37,575.38

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Solution

The fourth proportional to 81,911.54, 122,718.99 and 37,575.38 is: 56,295.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,911.54 : 122,718.99 = 37,575.38 : x
  2. Step 2: Convert to fraction form
    81,911.54/122,718.99 = 37,575.38/x
  3. Step 3: Cross multiply
    81,911.54x = 122,718.99 × 37,575.38
  4. Step 4: Simplify right side
    81,911.54x = 4,611,212,682.47
  5. Step 5: Solve for x
    x = 4,611,212,682.47/81,911.54
  6. Step 6: Final answer
    x = 56,295.03

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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.