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Finding the Fourth Proportional to 62.54, 93.75 and 57.42

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Solution

The fourth proportional to 62.54, 93.75 and 57.42 is: 86.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.54 : 93.75 = 57.42 : x
  2. Step 2: Convert to fraction form
    62.54/93.75 = 57.42/x
  3. Step 3: Cross multiply
    62.54x = 93.75 × 57.42
  4. Step 4: Simplify right side
    62.54x = 5,382.80
  5. Step 5: Solve for x
    x = 5,382.80/62.54
  6. Step 6: Final answer
    x = 86.07

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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.