Home / 79,818.22-119,712.97-20,650.32

Finding the Fourth Proportional to 79,818.22, 119,712.97 and 20,650.32

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Solution

The fourth proportional to 79,818.22, 119,712.97 and 20,650.32 is: 30,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,818.22 : 119,712.97 = 20,650.32 : x
  2. Step 2: Convert to fraction form
    79,818.22/119,712.97 = 20,650.32/x
  3. Step 3: Cross multiply
    79,818.22x = 119,712.97 × 20,650.32
  4. Step 4: Simplify right side
    79,818.22x = 2,472,111,138.65
  5. Step 5: Solve for x
    x = 2,472,111,138.65/79,818.22
  6. Step 6: Final answer
    x = 30,971.76

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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.