Home / 81,629.64-122,411.04-25,450.72

Finding the Fourth Proportional to 81,629.64, 122,411.04 and 25,450.72

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Solution

The fourth proportional to 81,629.64, 122,411.04 and 25,450.72 is: 38,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.64 : 122,411.04 = 25,450.72 : x
  2. Step 2: Convert to fraction form
    81,629.64/122,411.04 = 25,450.72/x
  3. Step 3: Cross multiply
    81,629.64x = 122,411.04 × 25,450.72
  4. Step 4: Simplify right side
    81,629.64x = 3,115,449,103.95
  5. Step 5: Solve for x
    x = 3,115,449,103.95/81,629.64
  6. Step 6: Final answer
    x = 38,165.66

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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.