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Finding the Fourth Proportional to 50,679.81, 69,935.12 and 28,017.44

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Solution

The fourth proportional to 50,679.81, 69,935.12 and 28,017.44 is: 38,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,679.81 : 69,935.12 = 28,017.44 : x
  2. Step 2: Convert to fraction form
    50,679.81/69,935.12 = 28,017.44/x
  3. Step 3: Cross multiply
    50,679.81x = 69,935.12 × 28,017.44
  4. Step 4: Simplify right side
    50,679.81x = 1,959,403,181.54
  5. Step 5: Solve for x
    x = 1,959,403,181.54/50,679.81
  6. Step 6: Final answer
    x = 38,662.40

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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.