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Finding the Fourth Proportional to 77.94, 116.96 and 58.69

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Solution

The fourth proportional to 77.94, 116.96 and 58.69 is: 88.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.94 : 116.96 = 58.69 : x
  2. Step 2: Convert to fraction form
    77.94/116.96 = 58.69/x
  3. Step 3: Cross multiply
    77.94x = 116.96 × 58.69
  4. Step 4: Simplify right side
    77.94x = 6,864.38
  5. Step 5: Solve for x
    x = 6,864.38/77.94
  6. Step 6: Final answer
    x = 88.07

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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.