Home / 57,172.12-85,066.19-55,743.64

Finding the Fourth Proportional to 57,172.12, 85,066.19 and 55,743.64

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Solution

The fourth proportional to 57,172.12, 85,066.19 and 55,743.64 is: 82,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,172.12 : 85,066.19 = 55,743.64 : x
  2. Step 2: Convert to fraction form
    57,172.12/85,066.19 = 55,743.64/x
  3. Step 3: Cross multiply
    57,172.12x = 85,066.19 × 55,743.64
  4. Step 4: Simplify right side
    57,172.12x = 4,741,899,071.53
  5. Step 5: Solve for x
    x = 4,741,899,071.53/57,172.12
  6. Step 6: Final answer
    x = 82,940.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.