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Finding the Fourth Proportional to 68.15, 93.95 and 43.56

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Solution

The fourth proportional to 68.15, 93.95 and 43.56 is: 60.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.15 : 93.95 = 43.56 : x
  2. Step 2: Convert to fraction form
    68.15/93.95 = 43.56/x
  3. Step 3: Cross multiply
    68.15x = 93.95 × 43.56
  4. Step 4: Simplify right side
    68.15x = 4,092.24
  5. Step 5: Solve for x
    x = 4,092.24/68.15
  6. Step 6: Final answer
    x = 60.05

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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.