Home / 57,578.50-86,346.96-20,128.42

Finding the Fourth Proportional to 57,578.50, 86,346.96 and 20,128.42

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Solution

The fourth proportional to 57,578.50, 86,346.96 and 20,128.42 is: 30,185.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,578.50 : 86,346.96 = 20,128.42 : x
  2. Step 2: Convert to fraction form
    57,578.50/86,346.96 = 20,128.42/x
  3. Step 3: Cross multiply
    57,578.50x = 86,346.96 × 20,128.42
  4. Step 4: Simplify right side
    57,578.50x = 1,738,027,876.60
  5. Step 5: Solve for x
    x = 1,738,027,876.60/57,578.50
  6. Step 6: Final answer
    x = 30,185.36

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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.