Home / 45,239.60-67,837.84-20,279.88

Finding the Fourth Proportional to 45,239.60, 67,837.84 and 20,279.88

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Solution

The fourth proportional to 45,239.60, 67,837.84 and 20,279.88 is: 30,410.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,239.60 : 67,837.84 = 20,279.88 : x
  2. Step 2: Convert to fraction form
    45,239.60/67,837.84 = 20,279.88/x
  3. Step 3: Cross multiply
    45,239.60x = 67,837.84 × 20,279.88
  4. Step 4: Simplify right side
    45,239.60x = 1,375,743,254.66
  5. Step 5: Solve for x
    x = 1,375,743,254.66/45,239.60
  6. Step 6: Final answer
    x = 30,410.16

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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.