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Finding the Fourth Proportional to 81,603.58, 122,393.85 and 26,192.38

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Solution

The fourth proportional to 81,603.58, 122,393.85 and 26,192.38 is: 39,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603.58 : 122,393.85 = 26,192.38 : x
  2. Step 2: Convert to fraction form
    81,603.58/122,393.85 = 26,192.38/x
  3. Step 3: Cross multiply
    81,603.58x = 122,393.85 × 26,192.38
  4. Step 4: Simplify right side
    81,603.58x = 3,205,786,228.86
  5. Step 5: Solve for x
    x = 3,205,786,228.86/81,603.58
  6. Step 6: Final answer
    x = 39,284.87

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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.