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Finding the Fourth Proportional to 29,928.80, 44,941.80 and 20,111.60

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Solution

The fourth proportional to 29,928.80, 44,941.80 and 20,111.60 is: 30,200.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,928.80 : 44,941.80 = 20,111.60 : x
  2. Step 2: Convert to fraction form
    29,928.80/44,941.80 = 20,111.60/x
  3. Step 3: Cross multiply
    29,928.80x = 44,941.80 × 20,111.60
  4. Step 4: Simplify right side
    29,928.80x = 903,851,504.88
  5. Step 5: Solve for x
    x = 903,851,504.88/29,928.80
  6. Step 6: Final answer
    x = 30,200.06

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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.