Home / 76,650.45-114,981.41-20,489.27

Finding the Fourth Proportional to 76,650.45, 114,981.41 and 20,489.27

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Solution

The fourth proportional to 76,650.45, 114,981.41 and 20,489.27 is: 30,735.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,650.45 : 114,981.41 = 20,489.27 : x
  2. Step 2: Convert to fraction form
    76,650.45/114,981.41 = 20,489.27/x
  3. Step 3: Cross multiply
    76,650.45x = 114,981.41 × 20,489.27
  4. Step 4: Simplify right side
    76,650.45x = 2,355,885,162.31
  5. Step 5: Solve for x
    x = 2,355,885,162.31/76,650.45
  6. Step 6: Final answer
    x = 30,735.44

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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.