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Finding the Fourth Proportional to 51,245.80, 76,835.57 and 20,084.20

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Solution

The fourth proportional to 51,245.80, 76,835.57 and 20,084.20 is: 30,113.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,245.80 : 76,835.57 = 20,084.20 : x
  2. Step 2: Convert to fraction form
    51,245.80/76,835.57 = 20,084.20/x
  3. Step 3: Cross multiply
    51,245.80x = 76,835.57 × 20,084.20
  4. Step 4: Simplify right side
    51,245.80x = 1,543,180,954.99
  5. Step 5: Solve for x
    x = 1,543,180,954.99/51,245.80
  6. Step 6: Final answer
    x = 30,113.32

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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.