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Finding the Fourth Proportional to 32,119.80, 48,222.90 and 20,455.80

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Solution

The fourth proportional to 32,119.80, 48,222.90 and 20,455.80 is: 30,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,119.80 : 48,222.90 = 20,455.80 : x
  2. Step 2: Convert to fraction form
    32,119.80/48,222.90 = 20,455.80/x
  3. Step 3: Cross multiply
    32,119.80x = 48,222.90 × 20,455.80
  4. Step 4: Simplify right side
    32,119.80x = 986,437,997.82
  5. Step 5: Solve for x
    x = 986,437,997.82/32,119.80
  6. Step 6: Final answer
    x = 30,711.21

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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.