Home / 51,280.20-76,920.30-40,912.20

Finding the Fourth Proportional to 51,280.20, 76,920.30 and 40,912.20

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Solution

The fourth proportional to 51,280.20, 76,920.30 and 40,912.20 is: 61,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,280.20 : 76,920.30 = 40,912.20 : x
  2. Step 2: Convert to fraction form
    51,280.20/76,920.30 = 40,912.20/x
  3. Step 3: Cross multiply
    51,280.20x = 76,920.30 × 40,912.20
  4. Step 4: Simplify right side
    51,280.20x = 3,146,978,697.66
  5. Step 5: Solve for x
    x = 3,146,978,697.66/51,280.20
  6. Step 6: Final answer
    x = 61,368.30

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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.