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Finding the Fourth Proportional to 57,156.40, 85,734.60 and 36,161.20

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Solution

The fourth proportional to 57,156.40, 85,734.60 and 36,161.20 is: 54,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,156.40 : 85,734.60 = 36,161.20 : x
  2. Step 2: Convert to fraction form
    57,156.40/85,734.60 = 36,161.20/x
  3. Step 3: Cross multiply
    57,156.40x = 85,734.60 × 36,161.20
  4. Step 4: Simplify right side
    57,156.40x = 3,100,266,017.52
  5. Step 5: Solve for x
    x = 3,100,266,017.52/57,156.40
  6. Step 6: Final answer
    x = 54,241.80

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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.