Home / 76,973.96-115,298.82-39,419.90

Finding the Fourth Proportional to 76,973.96, 115,298.82 and 39,419.90

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Solution

The fourth proportional to 76,973.96, 115,298.82 and 39,419.90 is: 59,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,973.96 : 115,298.82 = 39,419.90 : x
  2. Step 2: Convert to fraction form
    76,973.96/115,298.82 = 39,419.90/x
  3. Step 3: Cross multiply
    76,973.96x = 115,298.82 × 39,419.90
  4. Step 4: Simplify right side
    76,973.96x = 4,545,067,954.52
  5. Step 5: Solve for x
    x = 4,545,067,954.52/76,973.96
  6. Step 6: Final answer
    x = 59,046.83

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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.