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Finding the Fourth Proportional to 63,015.96, 86,958 and 34,721.64

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Solution

The fourth proportional to 63,015.96, 86,958 and 34,721.64 is: 47,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,015.96 : 86,958 = 34,721.64 : x
  2. Step 2: Convert to fraction form
    63,015.96/86,958 = 34,721.64/x
  3. Step 3: Cross multiply
    63,015.96x = 86,958 × 34,721.64
  4. Step 4: Simplify right side
    63,015.96x = 3,019,324,371.12
  5. Step 5: Solve for x
    x = 3,019,324,371.12/63,015.96
  6. Step 6: Final answer
    x = 47,913.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.