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Finding the Fourth Proportional to 67,075.70, 100,613.55 and 30,211.70

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Solution

The fourth proportional to 67,075.70, 100,613.55 and 30,211.70 is: 45,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,075.70 : 100,613.55 = 30,211.70 : x
  2. Step 2: Convert to fraction form
    67,075.70/100,613.55 = 30,211.70/x
  3. Step 3: Cross multiply
    67,075.70x = 100,613.55 × 30,211.70
  4. Step 4: Simplify right side
    67,075.70x = 3,039,706,388.54
  5. Step 5: Solve for x
    x = 3,039,706,388.54/67,075.70
  6. Step 6: Final answer
    x = 45,317.55

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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.