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Finding the Fourth Proportional to 32,438.80, 48,658.20 and 20,150.80

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Solution

The fourth proportional to 32,438.80, 48,658.20 and 20,150.80 is: 30,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,438.80 : 48,658.20 = 20,150.80 : x
  2. Step 2: Convert to fraction form
    32,438.80/48,658.20 = 20,150.80/x
  3. Step 3: Cross multiply
    32,438.80x = 48,658.20 × 20,150.80
  4. Step 4: Simplify right side
    32,438.80x = 980,501,656.56
  5. Step 5: Solve for x
    x = 980,501,656.56/32,438.80
  6. Step 6: Final answer
    x = 30,226.20

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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.