Home / 78,450.60-117,708.71-34,114.65

Finding the Fourth Proportional to 78,450.60, 117,708.71 and 34,114.65

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Solution

The fourth proportional to 78,450.60, 117,708.71 and 34,114.65 is: 51,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,450.60 : 117,708.71 = 34,114.65 : x
  2. Step 2: Convert to fraction form
    78,450.60/117,708.71 = 34,114.65/x
  3. Step 3: Cross multiply
    78,450.60x = 117,708.71 × 34,114.65
  4. Step 4: Simplify right side
    78,450.60x = 4,015,591,443.60
  5. Step 5: Solve for x
    x = 4,015,591,443.60/78,450.60
  6. Step 6: Final answer
    x = 51,186.24

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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.