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Finding the Fourth Proportional to 96.02, 132.47 and 57.19

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Solution

The fourth proportional to 96.02, 132.47 and 57.19 is: 78.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.02 : 132.47 = 57.19 : x
  2. Step 2: Convert to fraction form
    96.02/132.47 = 57.19/x
  3. Step 3: Cross multiply
    96.02x = 132.47 × 57.19
  4. Step 4: Simplify right side
    96.02x = 7,575.34
  5. Step 5: Solve for x
    x = 7,575.34/96.02
  6. Step 6: Final answer
    x = 78.89

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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.