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Finding the Fourth Proportional to 73,813.80, 110,720.70 and 54,130.80

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Solution

The fourth proportional to 73,813.80, 110,720.70 and 54,130.80 is: 81,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,813.80 : 110,720.70 = 54,130.80 : x
  2. Step 2: Convert to fraction form
    73,813.80/110,720.70 = 54,130.80/x
  3. Step 3: Cross multiply
    73,813.80x = 110,720.70 × 54,130.80
  4. Step 4: Simplify right side
    73,813.80x = 5,993,400,067.56
  5. Step 5: Solve for x
    x = 5,993,400,067.56/73,813.80
  6. Step 6: Final answer
    x = 81,196.20

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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.