Home / 57,170.42-78,922.61-40,189.22

Finding the Fourth Proportional to 57,170.42, 78,922.61 and 40,189.22

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Solution

The fourth proportional to 57,170.42, 78,922.61 and 40,189.22 is: 55,480.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,170.42 : 78,922.61 = 40,189.22 : x
  2. Step 2: Convert to fraction form
    57,170.42/78,922.61 = 40,189.22/x
  3. Step 3: Cross multiply
    57,170.42x = 78,922.61 × 40,189.22
  4. Step 4: Simplify right side
    57,170.42x = 3,171,838,434.04
  5. Step 5: Solve for x
    x = 3,171,838,434.04/57,170.42
  6. Step 6: Final answer
    x = 55,480.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.