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Finding the Fourth Proportional to 50,667.72, 69,920.10 and 28,311.72

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Solution

The fourth proportional to 50,667.72, 69,920.10 and 28,311.72 is: 39,069.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,667.72 : 69,920.10 = 28,311.72 : x
  2. Step 2: Convert to fraction form
    50,667.72/69,920.10 = 28,311.72/x
  3. Step 3: Cross multiply
    50,667.72x = 69,920.10 × 28,311.72
  4. Step 4: Simplify right side
    50,667.72x = 1,979,558,293.57
  5. Step 5: Solve for x
    x = 1,979,558,293.57/50,667.72
  6. Step 6: Final answer
    x = 39,069.42

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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.