Home / 76,913.70-115,370.55-68,619.30

Finding the Fourth Proportional to 76,913.70, 115,370.55 and 68,619.30

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Solution

The fourth proportional to 76,913.70, 115,370.55 and 68,619.30 is: 102,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,913.70 : 115,370.55 = 68,619.30 : x
  2. Step 2: Convert to fraction form
    76,913.70/115,370.55 = 68,619.30/x
  3. Step 3: Cross multiply
    76,913.70x = 115,370.55 × 68,619.30
  4. Step 4: Simplify right side
    76,913.70x = 7,916,646,381.62
  5. Step 5: Solve for x
    x = 7,916,646,381.62/76,913.70
  6. Step 6: Final answer
    x = 102,928.95

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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.