Home / 56,879.82-78,496.58-31,729.32

Finding the Fourth Proportional to 56,879.82, 78,496.58 and 31,729.32

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Solution

The fourth proportional to 56,879.82, 78,496.58 and 31,729.32 is: 43,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,879.82 : 78,496.58 = 31,729.32 : x
  2. Step 2: Convert to fraction form
    56,879.82/78,496.58 = 31,729.32/x
  3. Step 3: Cross multiply
    56,879.82x = 78,496.58 × 31,729.32
  4. Step 4: Simplify right side
    56,879.82x = 2,490,642,947.08
  5. Step 5: Solve for x
    x = 2,490,642,947.08/56,879.82
  6. Step 6: Final answer
    x = 43,787.81

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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.