Home / 73,111.41-109,676.84-20,521.35

Finding the Fourth Proportional to 73,111.41, 109,676.84 and 20,521.35

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Solution

The fourth proportional to 73,111.41, 109,676.84 and 20,521.35 is: 30,784.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,111.41 : 109,676.84 = 20,521.35 : x
  2. Step 2: Convert to fraction form
    73,111.41/109,676.84 = 20,521.35/x
  3. Step 3: Cross multiply
    73,111.41x = 109,676.84 × 20,521.35
  4. Step 4: Simplify right side
    73,111.41x = 2,250,716,717.93
  5. Step 5: Solve for x
    x = 2,250,716,717.93/73,111.41
  6. Step 6: Final answer
    x = 30,784.75

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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.