Home / 45,320.72-67,969.20-20,346.80

Finding the Fourth Proportional to 45,320.72, 67,969.20 and 20,346.80

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Solution

The fourth proportional to 45,320.72, 67,969.20 and 20,346.80 is: 30,514.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320.72 : 67,969.20 = 20,346.80 : x
  2. Step 2: Convert to fraction form
    45,320.72/67,969.20 = 20,346.80/x
  3. Step 3: Cross multiply
    45,320.72x = 67,969.20 × 20,346.80
  4. Step 4: Simplify right side
    45,320.72x = 1,382,955,718.56
  5. Step 5: Solve for x
    x = 1,382,955,718.56/45,320.72
  6. Step 6: Final answer
    x = 30,514.87

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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.