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Finding the Fourth Proportional to 56.36, 78.11 and 50.60

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Solution

The fourth proportional to 56.36, 78.11 and 50.60 is: 70.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.36 : 78.11 = 50.60 : x
  2. Step 2: Convert to fraction form
    56.36/78.11 = 50.60/x
  3. Step 3: Cross multiply
    56.36x = 78.11 × 50.60
  4. Step 4: Simplify right side
    56.36x = 3,952.37
  5. Step 5: Solve for x
    x = 3,952.37/56.36
  6. Step 6: Final answer
    x = 70.13

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.