Home / 57,171.12-85,064.70-55,742.64

Finding the Fourth Proportional to 57,171.12, 85,064.70 and 55,742.64

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Solution

The fourth proportional to 57,171.12, 85,064.70 and 55,742.64 is: 82,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,171.12 : 85,064.70 = 55,742.64 : x
  2. Step 2: Convert to fraction form
    57,171.12/85,064.70 = 55,742.64/x
  3. Step 3: Cross multiply
    57,171.12x = 85,064.70 × 55,742.64
  4. Step 4: Simplify right side
    57,171.12x = 4,741,730,948.81
  5. Step 5: Solve for x
    x = 4,741,730,948.81/57,171.12
  6. Step 6: Final answer
    x = 82,939.27

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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.