Home / 78,781.39-118,136.54-22,608.75

Finding the Fourth Proportional to 78,781.39, 118,136.54 and 22,608.75

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Solution

The fourth proportional to 78,781.39, 118,136.54 and 22,608.75 is: 33,902.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,781.39 : 118,136.54 = 22,608.75 : x
  2. Step 2: Convert to fraction form
    78,781.39/118,136.54 = 22,608.75/x
  3. Step 3: Cross multiply
    78,781.39x = 118,136.54 × 22,608.75
  4. Step 4: Simplify right side
    78,781.39x = 2,670,919,498.73
  5. Step 5: Solve for x
    x = 2,670,919,498.73/78,781.39
  6. Step 6: Final answer
    x = 33,902.92

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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.