Home / 57,228.26-78,979.68-31,742.64

Finding the Fourth Proportional to 57,228.26, 78,979.68 and 31,742.64

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Solution

The fourth proportional to 57,228.26, 78,979.68 and 31,742.64 is: 43,807.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,228.26 : 78,979.68 = 31,742.64 : x
  2. Step 2: Convert to fraction form
    57,228.26/78,979.68 = 31,742.64/x
  3. Step 3: Cross multiply
    57,228.26x = 78,979.68 × 31,742.64
  4. Step 4: Simplify right side
    57,228.26x = 2,507,023,549.56
  5. Step 5: Solve for x
    x = 2,507,023,549.56/57,228.26
  6. Step 6: Final answer
    x = 43,807.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.