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Finding the Fourth Proportional to 50.58, 70.18 and 50.11

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Solution

The fourth proportional to 50.58, 70.18 and 50.11 is: 69.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.58 : 70.18 = 50.11 : x
  2. Step 2: Convert to fraction form
    50.58/70.18 = 50.11/x
  3. Step 3: Cross multiply
    50.58x = 70.18 × 50.11
  4. Step 4: Simplify right side
    50.58x = 3,516.42
  5. Step 5: Solve for x
    x = 3,516.42/50.58
  6. Step 6: Final answer
    x = 69.52

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.