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Finding the Fourth Proportional to 62.86, 94.03 and 54.39

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Solution

The fourth proportional to 62.86, 94.03 and 54.39 is: 81.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.86 : 94.03 = 54.39 : x
  2. Step 2: Convert to fraction form
    62.86/94.03 = 54.39/x
  3. Step 3: Cross multiply
    62.86x = 94.03 × 54.39
  4. Step 4: Simplify right side
    62.86x = 5,114.06
  5. Step 5: Solve for x
    x = 5,114.06/62.86
  6. Step 6: Final answer
    x = 81.36

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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.