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Finding the Fourth Proportional to 56.14, 84.14 and 47.99

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Solution

The fourth proportional to 56.14, 84.14 and 47.99 is: 71.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.14 : 84.14 = 47.99 : x
  2. Step 2: Convert to fraction form
    56.14/84.14 = 47.99/x
  3. Step 3: Cross multiply
    56.14x = 84.14 × 47.99
  4. Step 4: Simplify right side
    56.14x = 4,038.03
  5. Step 5: Solve for x
    x = 4,038.03/56.14
  6. Step 6: Final answer
    x = 71.92

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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.