Home / 74,711.20-111,968.40-54,896.80

Finding the Fourth Proportional to 74,711.20, 111,968.40 and 54,896.80

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Solution

The fourth proportional to 74,711.20, 111,968.40 and 54,896.80 is: 82,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,711.20 : 111,968.40 = 54,896.80 : x
  2. Step 2: Convert to fraction form
    74,711.20/111,968.40 = 54,896.80/x
  3. Step 3: Cross multiply
    74,711.20x = 111,968.40 × 54,896.80
  4. Step 4: Simplify right side
    74,711.20x = 6,146,706,861.12
  5. Step 5: Solve for x
    x = 6,146,706,861.12/74,711.20
  6. Step 6: Final answer
    x = 82,272.90

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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.