Home / 76,929.40-115,329.30-39,993.40

Finding the Fourth Proportional to 76,929.40, 115,329.30 and 39,993.40

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Solution

The fourth proportional to 76,929.40, 115,329.30 and 39,993.40 is: 59,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,929.40 : 115,329.30 = 39,993.40 : x
  2. Step 2: Convert to fraction form
    76,929.40/115,329.30 = 39,993.40/x
  3. Step 3: Cross multiply
    76,929.40x = 115,329.30 × 39,993.40
  4. Step 4: Simplify right side
    76,929.40x = 4,612,410,826.62
  5. Step 5: Solve for x
    x = 4,612,410,826.62/76,929.40
  6. Step 6: Final answer
    x = 59,956.41

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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.