Home / 76,814.75-115,222.20-21,410.75

Finding the Fourth Proportional to 76,814.75, 115,222.20 and 21,410.75

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Solution

The fourth proportional to 76,814.75, 115,222.20 and 21,410.75 is: 32,116.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,814.75 : 115,222.20 = 21,410.75 : x
  2. Step 2: Convert to fraction form
    76,814.75/115,222.20 = 21,410.75/x
  3. Step 3: Cross multiply
    76,814.75x = 115,222.20 × 21,410.75
  4. Step 4: Simplify right side
    76,814.75x = 2,466,993,611.60
  5. Step 5: Solve for x
    x = 2,466,993,611.60/76,814.75
  6. Step 6: Final answer
    x = 32,116.14

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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.