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Finding the Fourth Proportional to 50,212.09, 69,292.09 and 28,990.90

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Solution

The fourth proportional to 50,212.09, 69,292.09 and 28,990.90 is: 40,007.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,212.09 : 69,292.09 = 28,990.90 : x
  2. Step 2: Convert to fraction form
    50,212.09/69,292.09 = 28,990.90/x
  3. Step 3: Cross multiply
    50,212.09x = 69,292.09 × 28,990.90
  4. Step 4: Simplify right side
    50,212.09x = 2,008,840,051.98
  5. Step 5: Solve for x
    x = 2,008,840,051.98/50,212.09
  6. Step 6: Final answer
    x = 40,007.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.