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Finding the Fourth Proportional to 84.12, 116.05 and 59.58

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Solution

The fourth proportional to 84.12, 116.05 and 59.58 is: 82.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.12 : 116.05 = 59.58 : x
  2. Step 2: Convert to fraction form
    84.12/116.05 = 59.58/x
  3. Step 3: Cross multiply
    84.12x = 116.05 × 59.58
  4. Step 4: Simplify right side
    84.12x = 6,914.26
  5. Step 5: Solve for x
    x = 6,914.26/84.12
  6. Step 6: Final answer
    x = 82.20

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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.