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Finding the Fourth Proportional to 33,406.80, 46,079.19 and 21,485.22

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Solution

The fourth proportional to 33,406.80, 46,079.19 and 21,485.22 is: 29,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,406.80 : 46,079.19 = 21,485.22 : x
  2. Step 2: Convert to fraction form
    33,406.80/46,079.19 = 21,485.22/x
  3. Step 3: Cross multiply
    33,406.80x = 46,079.19 × 21,485.22
  4. Step 4: Simplify right side
    33,406.80x = 990,021,534.57
  5. Step 5: Solve for x
    x = 990,021,534.57/33,406.80
  6. Step 6: Final answer
    x = 29,635.33

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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.