Home / 57,170.20-85,985.70-51,179.80

Finding the Fourth Proportional to 57,170.20, 85,985.70 and 51,179.80

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Solution

The fourth proportional to 57,170.20, 85,985.70 and 51,179.80 is: 76,975.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,170.20 : 85,985.70 = 51,179.80 : x
  2. Step 2: Convert to fraction form
    57,170.20/85,985.70 = 51,179.80/x
  3. Step 3: Cross multiply
    57,170.20x = 85,985.70 × 51,179.80
  4. Step 4: Simplify right side
    57,170.20x = 4,400,730,928.86
  5. Step 5: Solve for x
    x = 4,400,730,928.86/57,170.20
  6. Step 6: Final answer
    x = 76,975.96

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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.