Home / 56,879.68-78,494.64-31,729.16

Finding the Fourth Proportional to 56,879.68, 78,494.64 and 31,729.16

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Solution

The fourth proportional to 56,879.68, 78,494.64 and 31,729.16 is: 43,786.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,879.68 : 78,494.64 = 31,729.16 : x
  2. Step 2: Convert to fraction form
    56,879.68/78,494.64 = 31,729.16/x
  3. Step 3: Cross multiply
    56,879.68x = 78,494.64 × 31,729.16
  4. Step 4: Simplify right side
    56,879.68x = 2,490,568,991.70
  5. Step 5: Solve for x
    x = 2,490,568,991.70/56,879.68
  6. Step 6: Final answer
    x = 43,786.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.