Home / 101,040.07-139,436.29-55,719.66

Finding the Fourth Proportional to 101,040.07, 139,436.29 and 55,719.66

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Solution

The fourth proportional to 101,040.07, 139,436.29 and 55,719.66 is: 76,893.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,040.07 : 139,436.29 = 55,719.66 : x
  2. Step 2: Convert to fraction form
    101,040.07/139,436.29 = 55,719.66/x
  3. Step 3: Cross multiply
    101,040.07x = 139,436.29 × 55,719.66
  4. Step 4: Simplify right side
    101,040.07x = 7,769,342,391.86
  5. Step 5: Solve for x
    x = 7,769,342,391.86/101,040.07
  6. Step 6: Final answer
    x = 76,893.68

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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.