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Finding the Fourth Proportional to 77.95, 116.93 and 23.85

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Solution

The fourth proportional to 77.95, 116.93 and 23.85 is: 35.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.95 : 116.93 = 23.85 : x
  2. Step 2: Convert to fraction form
    77.95/116.93 = 23.85/x
  3. Step 3: Cross multiply
    77.95x = 116.93 × 23.85
  4. Step 4: Simplify right side
    77.95x = 2,788.08
  5. Step 5: Solve for x
    x = 2,788.08/77.95
  6. Step 6: Final answer
    x = 35.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.