Home / 78,408.09-117,321.49-46,835.33

Finding the Fourth Proportional to 78,408.09, 117,321.49 and 46,835.33

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Solution

The fourth proportional to 78,408.09, 117,321.49 and 46,835.33 is: 70,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,408.09 : 117,321.49 = 46,835.33 : x
  2. Step 2: Convert to fraction form
    78,408.09/117,321.49 = 46,835.33/x
  3. Step 3: Cross multiply
    78,408.09x = 117,321.49 × 46,835.33
  4. Step 4: Simplify right side
    78,408.09x = 5,494,790,172.18
  5. Step 5: Solve for x
    x = 5,494,790,172.18/78,408.09
  6. Step 6: Final answer
    x = 70,079.38

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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.