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Finding the Fourth Proportional to 57,855.44, 86,744.28 and 30,172.88

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Solution

The fourth proportional to 57,855.44, 86,744.28 and 30,172.88 is: 45,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,855.44 : 86,744.28 = 30,172.88 : x
  2. Step 2: Convert to fraction form
    57,855.44/86,744.28 = 30,172.88/x
  3. Step 3: Cross multiply
    57,855.44x = 86,744.28 × 30,172.88
  4. Step 4: Simplify right side
    57,855.44x = 2,617,324,751.13
  5. Step 5: Solve for x
    x = 2,617,324,751.13/57,855.44
  6. Step 6: Final answer
    x = 45,239.04

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1.5x scale

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.