Home / 78,704.06-118,012.34-31,902.26

Finding the Fourth Proportional to 78,704.06, 118,012.34 and 31,902.26

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Solution

The fourth proportional to 78,704.06, 118,012.34 and 31,902.26 is: 47,835.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,704.06 : 118,012.34 = 31,902.26 : x
  2. Step 2: Convert to fraction form
    78,704.06/118,012.34 = 31,902.26/x
  3. Step 3: Cross multiply
    78,704.06x = 118,012.34 × 31,902.26
  4. Step 4: Simplify right side
    78,704.06x = 3,764,859,843.58
  5. Step 5: Solve for x
    x = 3,764,859,843.58/78,704.06
  6. Step 6: Final answer
    x = 47,835.65

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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.