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Finding the Fourth Proportional to 50,445.80, 69,613.75 and 28,939.12

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Solution

The fourth proportional to 50,445.80, 69,613.75 and 28,939.12 is: 39,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,445.80 : 69,613.75 = 28,939.12 : x
  2. Step 2: Convert to fraction form
    50,445.80/69,613.75 = 28,939.12/x
  3. Step 3: Cross multiply
    50,445.80x = 69,613.75 × 28,939.12
  4. Step 4: Simplify right side
    50,445.80x = 2,014,560,418.52
  5. Step 5: Solve for x
    x = 2,014,560,418.52/50,445.80
  6. Step 6: Final answer
    x = 39,935.15

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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.