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Finding the Fourth Proportional to 54,643.70, 81,811.95 and 53,107.70

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Solution

The fourth proportional to 54,643.70, 81,811.95 and 53,107.70 is: 79,512.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,643.70 : 81,811.95 = 53,107.70 : x
  2. Step 2: Convert to fraction form
    54,643.70/81,811.95 = 53,107.70/x
  3. Step 3: Cross multiply
    54,643.70x = 81,811.95 × 53,107.70
  4. Step 4: Simplify right side
    54,643.70x = 4,344,844,497.02
  5. Step 5: Solve for x
    x = 4,344,844,497.02/54,643.70
  6. Step 6: Final answer
    x = 79,512.27

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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.