Home / 45,081.10-67,642.91-20,118.92

Finding the Fourth Proportional to 45,081.10, 67,642.91 and 20,118.92

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Solution

The fourth proportional to 45,081.10, 67,642.91 and 20,118.92 is: 30,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,081.10 : 67,642.91 = 20,118.92 : x
  2. Step 2: Convert to fraction form
    45,081.10/67,642.91 = 20,118.92/x
  3. Step 3: Cross multiply
    45,081.10x = 67,642.91 × 20,118.92
  4. Step 4: Simplify right side
    45,081.10x = 1,360,902,514.26
  5. Step 5: Solve for x
    x = 1,360,902,514.26/45,081.10
  6. Step 6: Final answer
    x = 30,187.87

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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.