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Finding the Fourth Proportional to 50,310.63, 75,500.60 and 20,728.51

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Solution

The fourth proportional to 50,310.63, 75,500.60 and 20,728.51 is: 31,107.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,310.63 : 75,500.60 = 20,728.51 : x
  2. Step 2: Convert to fraction form
    50,310.63/75,500.60 = 20,728.51/x
  3. Step 3: Cross multiply
    50,310.63x = 75,500.60 × 20,728.51
  4. Step 4: Simplify right side
    50,310.63x = 1,565,014,942.11
  5. Step 5: Solve for x
    x = 1,565,014,942.11/50,310.63
  6. Step 6: Final answer
    x = 31,107.04

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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.