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Finding the Fourth Proportional to 34,750.80, 52,142.40 and 18,129.60

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Solution

The fourth proportional to 34,750.80, 52,142.40 and 18,129.60 is: 27,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,750.80 : 52,142.40 = 18,129.60 : x
  2. Step 2: Convert to fraction form
    34,750.80/52,142.40 = 18,129.60/x
  3. Step 3: Cross multiply
    34,750.80x = 52,142.40 × 18,129.60
  4. Step 4: Simplify right side
    34,750.80x = 945,320,855.04
  5. Step 5: Solve for x
    x = 945,320,855.04/34,750.80
  6. Step 6: Final answer
    x = 27,202.85

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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.