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Finding the Fourth Proportional to 50,647.80, 69,893.90 and 28,291.80

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Solution

The fourth proportional to 50,647.80, 69,893.90 and 28,291.80 is: 39,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,647.80 : 69,893.90 = 28,291.80 : x
  2. Step 2: Convert to fraction form
    50,647.80/69,893.90 = 28,291.80/x
  3. Step 3: Cross multiply
    50,647.80x = 69,893.90 × 28,291.80
  4. Step 4: Simplify right side
    50,647.80x = 1,977,424,240.02
  5. Step 5: Solve for x
    x = 1,977,424,240.02/50,647.80
  6. Step 6: Final answer
    x = 39,042.65

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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.