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Finding the Fourth Proportional to 67,306.95, 100,960.82 and 20,559.82

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Solution

The fourth proportional to 67,306.95, 100,960.82 and 20,559.82 is: 30,839.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,306.95 : 100,960.82 = 20,559.82 : x
  2. Step 2: Convert to fraction form
    67,306.95/100,960.82 = 20,559.82/x
  3. Step 3: Cross multiply
    67,306.95x = 100,960.82 × 20,559.82
  4. Step 4: Simplify right side
    67,306.95x = 2,075,736,286.25
  5. Step 5: Solve for x
    x = 2,075,736,286.25/67,306.95
  6. Step 6: Final answer
    x = 30,839.85

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1.5x scale

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.