Home / 76,804.12-115,221.90-43,539.04

Finding the Fourth Proportional to 76,804.12, 115,221.90 and 43,539.04

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Solution

The fourth proportional to 76,804.12, 115,221.90 and 43,539.04 is: 65,317.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,804.12 : 115,221.90 = 43,539.04 : x
  2. Step 2: Convert to fraction form
    76,804.12/115,221.90 = 43,539.04/x
  3. Step 3: Cross multiply
    76,804.12x = 115,221.90 × 43,539.04
  4. Step 4: Simplify right side
    76,804.12x = 5,016,650,912.98
  5. Step 5: Solve for x
    x = 5,016,650,912.98/76,804.12
  6. Step 6: Final answer
    x = 65,317.47

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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.