Home / 76,016.50-113,976.45-66,675.28

Finding the Fourth Proportional to 76,016.50, 113,976.45 and 66,675.28

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Solution

The fourth proportional to 76,016.50, 113,976.45 and 66,675.28 is: 99,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,016.50 : 113,976.45 = 66,675.28 : x
  2. Step 2: Convert to fraction form
    76,016.50/113,976.45 = 66,675.28/x
  3. Step 3: Cross multiply
    76,016.50x = 113,976.45 × 66,675.28
  4. Step 4: Simplify right side
    76,016.50x = 7,599,410,813.90
  5. Step 5: Solve for x
    x = 7,599,410,813.90/76,016.50
  6. Step 6: Final answer
    x = 99,970.54

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1.5x scale

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.