Home / 78,447.38-117,604.73-34,040.75

Finding the Fourth Proportional to 78,447.38, 117,604.73 and 34,040.75

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Solution

The fourth proportional to 78,447.38, 117,604.73 and 34,040.75 is: 51,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,447.38 : 117,604.73 = 34,040.75 : x
  2. Step 2: Convert to fraction form
    78,447.38/117,604.73 = 34,040.75/x
  3. Step 3: Cross multiply
    78,447.38x = 117,604.73 × 34,040.75
  4. Step 4: Simplify right side
    78,447.38x = 4,003,352,454.52
  5. Step 5: Solve for x
    x = 4,003,352,454.52/78,447.38
  6. Step 6: Final answer
    x = 51,032.33

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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.