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Finding the Fourth Proportional to 33,085.80, 49,628.70 and 31,919.40

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Solution

The fourth proportional to 33,085.80, 49,628.70 and 31,919.40 is: 47,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,085.80 : 49,628.70 = 31,919.40 : x
  2. Step 2: Convert to fraction form
    33,085.80/49,628.70 = 31,919.40/x
  3. Step 3: Cross multiply
    33,085.80x = 49,628.70 × 31,919.40
  4. Step 4: Simplify right side
    33,085.80x = 1,584,118,326.78
  5. Step 5: Solve for x
    x = 1,584,118,326.78/33,085.80
  6. Step 6: Final answer
    x = 47,879.10

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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.