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Finding the Fourth Proportional to 94.24, 130.06 and 72.36

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Solution

The fourth proportional to 94.24, 130.06 and 72.36 is: 99.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.24 : 130.06 = 72.36 : x
  2. Step 2: Convert to fraction form
    94.24/130.06 = 72.36/x
  3. Step 3: Cross multiply
    94.24x = 130.06 × 72.36
  4. Step 4: Simplify right side
    94.24x = 9,411.14
  5. Step 5: Solve for x
    x = 9,411.14/94.24
  6. Step 6: Final answer
    x = 99.86

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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.