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Finding the Fourth Proportional to 81,620.46, 122,468.36 and 37,260.81

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Solution

The fourth proportional to 81,620.46, 122,468.36 and 37,260.81 is: 55,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,620.46 : 122,468.36 = 37,260.81 : x
  2. Step 2: Convert to fraction form
    81,620.46/122,468.36 = 37,260.81/x
  3. Step 3: Cross multiply
    81,620.46x = 122,468.36 × 37,260.81
  4. Step 4: Simplify right side
    81,620.46x = 4,563,270,106.67
  5. Step 5: Solve for x
    x = 4,563,270,106.67/81,620.46
  6. Step 6: Final answer
    x = 55,908.41

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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.