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Finding the Fourth Proportional to 51,000.60, 76,500.90 and 39,190.80

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Solution

The fourth proportional to 51,000.60, 76,500.90 and 39,190.80 is: 58,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,000.60 : 76,500.90 = 39,190.80 : x
  2. Step 2: Convert to fraction form
    51,000.60/76,500.90 = 39,190.80/x
  3. Step 3: Cross multiply
    51,000.60x = 76,500.90 × 39,190.80
  4. Step 4: Simplify right side
    51,000.60x = 2,998,131,471.72
  5. Step 5: Solve for x
    x = 2,998,131,471.72/51,000.60
  6. Step 6: Final answer
    x = 58,786.20

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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.