Home / 57,085.38-85,667.02-20,149.38

Finding the Fourth Proportional to 57,085.38, 85,667.02 and 20,149.38

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Solution

The fourth proportional to 57,085.38, 85,667.02 and 20,149.38 is: 30,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,085.38 : 85,667.02 = 20,149.38 : x
  2. Step 2: Convert to fraction form
    57,085.38/85,667.02 = 20,149.38/x
  3. Step 3: Cross multiply
    57,085.38x = 85,667.02 × 20,149.38
  4. Step 4: Simplify right side
    57,085.38x = 1,726,137,339.45
  5. Step 5: Solve for x
    x = 1,726,137,339.45/57,085.38
  6. Step 6: Final answer
    x = 30,237.82

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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.