Home / 85,493.09-128,239.63-23,163.59

Finding the Fourth Proportional to 85,493.09, 128,239.63 and 23,163.59

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Solution

The fourth proportional to 85,493.09, 128,239.63 and 23,163.59 is: 34,745.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,493.09 : 128,239.63 = 23,163.59 : x
  2. Step 2: Convert to fraction form
    85,493.09/128,239.63 = 23,163.59/x
  3. Step 3: Cross multiply
    85,493.09x = 128,239.63 × 23,163.59
  4. Step 4: Simplify right side
    85,493.09x = 2,970,489,511.96
  5. Step 5: Solve for x
    x = 2,970,489,511.96/85,493.09
  6. Step 6: Final answer
    x = 34,745.38

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1.5x scale

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.