Home / 57,350.40-85,999.68-20,415.36

Finding the Fourth Proportional to 57,350.40, 85,999.68 and 20,415.36

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Solution

The fourth proportional to 57,350.40, 85,999.68 and 20,415.36 is: 30,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,350.40 : 85,999.68 = 20,415.36 : x
  2. Step 2: Convert to fraction form
    57,350.40/85,999.68 = 20,415.36/x
  3. Step 3: Cross multiply
    57,350.40x = 85,999.68 × 20,415.36
  4. Step 4: Simplify right side
    57,350.40x = 1,755,714,427.08
  5. Step 5: Solve for x
    x = 1,755,714,427.08/57,350.40
  6. Step 6: Final answer
    x = 30,613.81

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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.