Home / 71,716.63-98,971.68-39,887.83

Finding the Fourth Proportional to 71,716.63, 98,971.68 and 39,887.83

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Solution

The fourth proportional to 71,716.63, 98,971.68 and 39,887.83 is: 55,046.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,716.63 : 98,971.68 = 39,887.83 : x
  2. Step 2: Convert to fraction form
    71,716.63/98,971.68 = 39,887.83/x
  3. Step 3: Cross multiply
    71,716.63x = 98,971.68 × 39,887.83
  4. Step 4: Simplify right side
    71,716.63x = 3,947,765,546.65
  5. Step 5: Solve for x
    x = 3,947,765,546.65/71,716.63
  6. Step 6: Final answer
    x = 55,046.72

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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.