Home / 57,091.08-85,615.32-19,640.56

Finding the Fourth Proportional to 57,091.08, 85,615.32 and 19,640.56

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Solution

The fourth proportional to 57,091.08, 85,615.32 and 19,640.56 is: 29,453.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091.08 : 85,615.32 = 19,640.56 : x
  2. Step 2: Convert to fraction form
    57,091.08/85,615.32 = 19,640.56/x
  3. Step 3: Cross multiply
    57,091.08x = 85,615.32 × 19,640.56
  4. Step 4: Simplify right side
    57,091.08x = 1,681,532,829.38
  5. Step 5: Solve for x
    x = 1,681,532,829.38/57,091.08
  6. Step 6: Final answer
    x = 29,453.51

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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.