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Finding the Fourth Proportional to 69.99, 96.66 and 62.36

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Solution

The fourth proportional to 69.99, 96.66 and 62.36 is: 86.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.99 : 96.66 = 62.36 : x
  2. Step 2: Convert to fraction form
    69.99/96.66 = 62.36/x
  3. Step 3: Cross multiply
    69.99x = 96.66 × 62.36
  4. Step 4: Simplify right side
    69.99x = 6,027.23
  5. Step 5: Solve for x
    x = 6,027.23/69.99
  6. Step 6: Final answer
    x = 86.12

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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.