Home / 57,136.40-85,704.60-40,223.60

Finding the Fourth Proportional to 57,136.40, 85,704.60 and 40,223.60

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Solution

The fourth proportional to 57,136.40, 85,704.60 and 40,223.60 is: 60,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.40 : 85,704.60 = 40,223.60 : x
  2. Step 2: Convert to fraction form
    57,136.40/85,704.60 = 40,223.60/x
  3. Step 3: Cross multiply
    57,136.40x = 85,704.60 × 40,223.60
  4. Step 4: Simplify right side
    57,136.40x = 3,447,347,548.56
  5. Step 5: Solve for x
    x = 3,447,347,548.56/57,136.40
  6. Step 6: Final answer
    x = 60,335.40

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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.