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Finding the Fourth Proportional to 101,147.73, 139,583.74 and 55,825.80

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Solution

The fourth proportional to 101,147.73, 139,583.74 and 55,825.80 is: 77,039.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,147.73 : 139,583.74 = 55,825.80 : x
  2. Step 2: Convert to fraction form
    101,147.73/139,583.74 = 55,825.80/x
  3. Step 3: Cross multiply
    101,147.73x = 139,583.74 × 55,825.80
  4. Step 4: Simplify right side
    101,147.73x = 7,792,373,673.36
  5. Step 5: Solve for x
    x = 7,792,373,673.36/101,147.73
  6. Step 6: Final answer
    x = 77,039.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.