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Finding the Fourth Proportional to 49,643.70, 68,509.83 and 28,429.80

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Solution

The fourth proportional to 49,643.70, 68,509.83 and 28,429.80 is: 39,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,643.70 : 68,509.83 = 28,429.80 : x
  2. Step 2: Convert to fraction form
    49,643.70/68,509.83 = 28,429.80/x
  3. Step 3: Cross multiply
    49,643.70x = 68,509.83 × 28,429.80
  4. Step 4: Simplify right side
    49,643.70x = 1,947,720,764.93
  5. Step 5: Solve for x
    x = 1,947,720,764.93/49,643.70
  6. Step 6: Final answer
    x = 39,234.00

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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.