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Finding the Fourth Proportional to 54,396.55, 81,603.06 and 19,327.87

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Solution

The fourth proportional to 54,396.55, 81,603.06 and 19,327.87 is: 28,994.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,396.55 : 81,603.06 = 19,327.87 : x
  2. Step 2: Convert to fraction form
    54,396.55/81,603.06 = 19,327.87/x
  3. Step 3: Cross multiply
    54,396.55x = 81,603.06 × 19,327.87
  4. Step 4: Simplify right side
    54,396.55x = 1,577,213,335.28
  5. Step 5: Solve for x
    x = 1,577,213,335.28/54,396.55
  6. Step 6: Final answer
    x = 28,994.73

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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.