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Finding the Fourth Proportional to 50,115.76, 69,159.60 and 28,894.84

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Solution

The fourth proportional to 50,115.76, 69,159.60 and 28,894.84 is: 39,874.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,115.76 : 69,159.60 = 28,894.84 : x
  2. Step 2: Convert to fraction form
    50,115.76/69,159.60 = 28,894.84/x
  3. Step 3: Cross multiply
    50,115.76x = 69,159.60 × 28,894.84
  4. Step 4: Simplify right side
    50,115.76x = 1,998,355,576.46
  5. Step 5: Solve for x
    x = 1,998,355,576.46/50,115.76
  6. Step 6: Final answer
    x = 39,874.79

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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.