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Finding the Fourth Proportional to 84,396.90, 126,611.76 and 25,231.26

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Solution

The fourth proportional to 84,396.90, 126,611.76 and 25,231.26 is: 37,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,396.90 : 126,611.76 = 25,231.26 : x
  2. Step 2: Convert to fraction form
    84,396.90/126,611.76 = 25,231.26/x
  3. Step 3: Cross multiply
    84,396.90x = 126,611.76 × 25,231.26
  4. Step 4: Simplify right side
    84,396.90x = 3,194,574,235.62
  5. Step 5: Solve for x
    x = 3,194,574,235.62/84,396.90
  6. Step 6: Final answer
    x = 37,851.80

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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.