Home / 67,173.47-100,756.55-20,422.70

Finding the Fourth Proportional to 67,173.47, 100,756.55 and 20,422.70

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Solution

The fourth proportional to 67,173.47, 100,756.55 and 20,422.70 is: 30,632.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,173.47 : 100,756.55 = 20,422.70 : x
  2. Step 2: Convert to fraction form
    67,173.47/100,756.55 = 20,422.70/x
  3. Step 3: Cross multiply
    67,173.47x = 100,756.55 × 20,422.70
  4. Step 4: Simplify right side
    67,173.47x = 2,057,720,187.79
  5. Step 5: Solve for x
    x = 2,057,720,187.79/67,173.47
  6. Step 6: Final answer
    x = 30,632.93

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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.