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Finding the Fourth Proportional to 54,644.70, 81,813.45 and 53,108.70

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Solution

The fourth proportional to 54,644.70, 81,813.45 and 53,108.70 is: 79,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,644.70 : 81,813.45 = 53,108.70 : x
  2. Step 2: Convert to fraction form
    54,644.70/81,813.45 = 53,108.70/x
  3. Step 3: Cross multiply
    54,644.70x = 81,813.45 × 53,108.70
  4. Step 4: Simplify right side
    54,644.70x = 4,345,005,972.02
  5. Step 5: Solve for x
    x = 4,345,005,972.02/54,644.70
  6. Step 6: Final answer
    x = 79,513.77

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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.