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Finding the Fourth Proportional to 81,454.70, 122,145.60 and 37,058.60

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Solution

The fourth proportional to 81,454.70, 122,145.60 and 37,058.60 is: 55,571.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,454.70 : 122,145.60 = 37,058.60 : x
  2. Step 2: Convert to fraction form
    81,454.70/122,145.60 = 37,058.60/x
  3. Step 3: Cross multiply
    81,454.70x = 122,145.60 × 37,058.60
  4. Step 4: Simplify right side
    81,454.70x = 4,526,544,932.16
  5. Step 5: Solve for x
    x = 4,526,544,932.16/81,454.70
  6. Step 6: Final answer
    x = 55,571.32

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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.