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Finding the Fourth Proportional to 54.16, 74.60 and 43.68

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Solution

The fourth proportional to 54.16, 74.60 and 43.68 is: 60.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.16 : 74.60 = 43.68 : x
  2. Step 2: Convert to fraction form
    54.16/74.60 = 43.68/x
  3. Step 3: Cross multiply
    54.16x = 74.60 × 43.68
  4. Step 4: Simplify right side
    54.16x = 3,258.53
  5. Step 5: Solve for x
    x = 3,258.53/54.16
  6. Step 6: Final answer
    x = 60.16

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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.