Home / 57,158.87-85,698.21-30,880.85

Finding the Fourth Proportional to 57,158.87, 85,698.21 and 30,880.85

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Solution

The fourth proportional to 57,158.87, 85,698.21 and 30,880.85 is: 46,299.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,158.87 : 85,698.21 = 30,880.85 : x
  2. Step 2: Convert to fraction form
    57,158.87/85,698.21 = 30,880.85/x
  3. Step 3: Cross multiply
    57,158.87x = 85,698.21 × 30,880.85
  4. Step 4: Simplify right side
    57,158.87x = 2,646,433,568.28
  5. Step 5: Solve for x
    x = 2,646,433,568.28/57,158.87
  6. Step 6: Final answer
    x = 46,299.61

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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.