Home / 101,028.73-139,420.62-55,708.52

Finding the Fourth Proportional to 101,028.73, 139,420.62 and 55,708.52

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Solution

The fourth proportional to 101,028.73, 139,420.62 and 55,708.52 is: 76,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,028.73 : 139,420.62 = 55,708.52 : x
  2. Step 2: Convert to fraction form
    101,028.73/139,420.62 = 55,708.52/x
  3. Step 3: Cross multiply
    101,028.73x = 139,420.62 × 55,708.52
  4. Step 4: Simplify right side
    101,028.73x = 7,766,916,397.68
  5. Step 5: Solve for x
    x = 7,766,916,397.68/101,028.73
  6. Step 6: Final answer
    x = 76,878.29

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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.