Home / 45,138.12-67,723.38-20,176.08

Finding the Fourth Proportional to 45,138.12, 67,723.38 and 20,176.08

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Solution

The fourth proportional to 45,138.12, 67,723.38 and 20,176.08 is: 30,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.12 : 67,723.38 = 20,176.08 : x
  2. Step 2: Convert to fraction form
    45,138.12/67,723.38 = 20,176.08/x
  3. Step 3: Cross multiply
    45,138.12x = 67,723.38 × 20,176.08
  4. Step 4: Simplify right side
    45,138.12x = 1,366,392,332.75
  5. Step 5: Solve for x
    x = 1,366,392,332.75/45,138.12
  6. Step 6: Final answer
    x = 30,271.36

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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.