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Finding the Fourth Proportional to 55,318.88, 82,978.89 and 13,765.88

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Solution

The fourth proportional to 55,318.88, 82,978.89 and 13,765.88 is: 20,648.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,318.88 : 82,978.89 = 13,765.88 : x
  2. Step 2: Convert to fraction form
    55,318.88/82,978.89 = 13,765.88/x
  3. Step 3: Cross multiply
    55,318.88x = 82,978.89 × 13,765.88
  4. Step 4: Simplify right side
    55,318.88x = 1,142,277,442.27
  5. Step 5: Solve for x
    x = 1,142,277,442.27/55,318.88
  6. Step 6: Final answer
    x = 20,648.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.