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Finding the Fourth Proportional to 50,620, 69,859.92 and 28,268.32

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Solution

The fourth proportional to 50,620, 69,859.92 and 28,268.32 is: 39,012.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,620 : 69,859.92 = 28,268.32 : x
  2. Step 2: Convert to fraction form
    50,620/69,859.92 = 28,268.32/x
  3. Step 3: Cross multiply
    50,620x = 69,859.92 × 28,268.32
  4. Step 4: Simplify right side
    50,620x = 1,974,822,573.73
  5. Step 5: Solve for x
    x = 1,974,822,573.73/50,620
  6. Step 6: Final answer
    x = 39,012.69

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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.