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Finding the Fourth Proportional to 45,163.80, 67,745.70 and 21,835.80

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Solution

The fourth proportional to 45,163.80, 67,745.70 and 21,835.80 is: 32,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,163.80 : 67,745.70 = 21,835.80 : x
  2. Step 2: Convert to fraction form
    45,163.80/67,745.70 = 21,835.80/x
  3. Step 3: Cross multiply
    45,163.80x = 67,745.70 × 21,835.80
  4. Step 4: Simplify right side
    45,163.80x = 1,479,281,556.06
  5. Step 5: Solve for x
    x = 1,479,281,556.06/45,163.80
  6. Step 6: Final answer
    x = 32,753.70

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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.