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Finding the Fourth Proportional to 49,369.80, 68,122.80 and 31,480.08

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Solution

The fourth proportional to 49,369.80, 68,122.80 and 31,480.08 is: 43,437.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,369.80 : 68,122.80 = 31,480.08 : x
  2. Step 2: Convert to fraction form
    49,369.80/68,122.80 = 31,480.08/x
  3. Step 3: Cross multiply
    49,369.80x = 68,122.80 × 31,480.08
  4. Step 4: Simplify right side
    49,369.80x = 2,144,511,193.82
  5. Step 5: Solve for x
    x = 2,144,511,193.82/49,369.80
  6. Step 6: Final answer
    x = 43,437.71

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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.