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Finding the Fourth Proportional to 116.12, 174.02 and 47.57

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Solution

The fourth proportional to 116.12, 174.02 and 47.57 is: 71.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.12 : 174.02 = 47.57 : x
  2. Step 2: Convert to fraction form
    116.12/174.02 = 47.57/x
  3. Step 3: Cross multiply
    116.12x = 174.02 × 47.57
  4. Step 4: Simplify right side
    116.12x = 8,277.02
  5. Step 5: Solve for x
    x = 8,277.02/116.12
  6. Step 6: Final answer
    x = 71.28

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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.