Home / 67,137.27-100,720.62-20,393.79

Finding the Fourth Proportional to 67,137.27, 100,720.62 and 20,393.79

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Solution

The fourth proportional to 67,137.27, 100,720.62 and 20,393.79 is: 30,595.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,137.27 : 100,720.62 = 20,393.79 : x
  2. Step 2: Convert to fraction form
    67,137.27/100,720.62 = 20,393.79/x
  3. Step 3: Cross multiply
    67,137.27x = 100,720.62 × 20,393.79
  4. Step 4: Simplify right side
    67,137.27x = 2,054,075,172.95
  5. Step 5: Solve for x
    x = 2,054,075,172.95/67,137.27
  6. Step 6: Final answer
    x = 30,595.15

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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.