Home / 57,023.49-85,540.02-21,009.75

Finding the Fourth Proportional to 57,023.49, 85,540.02 and 21,009.75

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Solution

The fourth proportional to 57,023.49, 85,540.02 and 21,009.75 is: 31,516.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,023.49 : 85,540.02 = 21,009.75 : x
  2. Step 2: Convert to fraction form
    57,023.49/85,540.02 = 21,009.75/x
  3. Step 3: Cross multiply
    57,023.49x = 85,540.02 × 21,009.75
  4. Step 4: Simplify right side
    57,023.49x = 1,797,174,435.20
  5. Step 5: Solve for x
    x = 1,797,174,435.20/57,023.49
  6. Step 6: Final answer
    x = 31,516.39

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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.