Home / 81,937.22-122,917.93-41,978.81

Finding the Fourth Proportional to 81,937.22, 122,917.93 and 41,978.81

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Solution

The fourth proportional to 81,937.22, 122,917.93 and 41,978.81 is: 62,974.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,937.22 : 122,917.93 = 41,978.81 : x
  2. Step 2: Convert to fraction form
    81,937.22/122,917.93 = 41,978.81/x
  3. Step 3: Cross multiply
    81,937.22x = 122,917.93 × 41,978.81
  4. Step 4: Simplify right side
    81,937.22x = 5,159,947,604.58
  5. Step 5: Solve for x
    x = 5,159,947,604.58/81,937.22
  6. Step 6: Final answer
    x = 62,974.41

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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.