Home / 67,075.20-100,612.80-43,455.60

Finding the Fourth Proportional to 67,075.20, 100,612.80 and 43,455.60

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Solution

The fourth proportional to 67,075.20, 100,612.80 and 43,455.60 is: 65,183.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,075.20 : 100,612.80 = 43,455.60 : x
  2. Step 2: Convert to fraction form
    67,075.20/100,612.80 = 43,455.60/x
  3. Step 3: Cross multiply
    67,075.20x = 100,612.80 × 43,455.60
  4. Step 4: Simplify right side
    67,075.20x = 4,372,189,591.68
  5. Step 5: Solve for x
    x = 4,372,189,591.68/67,075.20
  6. Step 6: Final answer
    x = 65,183.40

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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.