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Finding the Fourth Proportional to 60.94, 84.10 and 39.10

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Solution

The fourth proportional to 60.94, 84.10 and 39.10 is: 53.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.94 : 84.10 = 39.10 : x
  2. Step 2: Convert to fraction form
    60.94/84.10 = 39.10/x
  3. Step 3: Cross multiply
    60.94x = 84.10 × 39.10
  4. Step 4: Simplify right side
    60.94x = 3,288.31
  5. Step 5: Solve for x
    x = 3,288.31/60.94
  6. Step 6: Final answer
    x = 53.96

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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.