Home / 67,190.52-100,782.14-20,439.75

Finding the Fourth Proportional to 67,190.52, 100,782.14 and 20,439.75

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Solution

The fourth proportional to 67,190.52, 100,782.14 and 20,439.75 is: 30,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,190.52 : 100,782.14 = 20,439.75 : x
  2. Step 2: Convert to fraction form
    67,190.52/100,782.14 = 20,439.75/x
  3. Step 3: Cross multiply
    67,190.52x = 100,782.14 × 20,439.75
  4. Step 4: Simplify right side
    67,190.52x = 2,059,961,643.87
  5. Step 5: Solve for x
    x = 2,059,961,643.87/67,190.52
  6. Step 6: Final answer
    x = 30,658.52

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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.