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Finding the Fourth Proportional to 61.94, 85.49 and 36.06

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Solution

The fourth proportional to 61.94, 85.49 and 36.06 is: 49.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.94 : 85.49 = 36.06 : x
  2. Step 2: Convert to fraction form
    61.94/85.49 = 36.06/x
  3. Step 3: Cross multiply
    61.94x = 85.49 × 36.06
  4. Step 4: Simplify right side
    61.94x = 3,082.77
  5. Step 5: Solve for x
    x = 3,082.77/61.94
  6. Step 6: Final answer
    x = 49.77

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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.