Home / 72,858.08-109,267.32-31,295.36

Finding the Fourth Proportional to 72,858.08, 109,267.32 and 31,295.36

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Solution

The fourth proportional to 72,858.08, 109,267.32 and 31,295.36 is: 46,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,858.08 : 109,267.32 = 31,295.36 : x
  2. Step 2: Convert to fraction form
    72,858.08/109,267.32 = 31,295.36/x
  3. Step 3: Cross multiply
    72,858.08x = 109,267.32 × 31,295.36
  4. Step 4: Simplify right side
    72,858.08x = 3,419,560,115.64
  5. Step 5: Solve for x
    x = 3,419,560,115.64/72,858.08
  6. Step 6: Final answer
    x = 46,934.54

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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.