Home / 82,313.40-123,729.30-76,092.60

Finding the Fourth Proportional to 82,313.40, 123,729.30 and 76,092.60

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Solution

The fourth proportional to 82,313.40, 123,729.30 and 76,092.60 is: 114,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,313.40 : 123,729.30 = 76,092.60 : x
  2. Step 2: Convert to fraction form
    82,313.40/123,729.30 = 76,092.60/x
  3. Step 3: Cross multiply
    82,313.40x = 123,729.30 × 76,092.60
  4. Step 4: Simplify right side
    82,313.40x = 9,414,884,133.18
  5. Step 5: Solve for x
    x = 9,414,884,133.18/82,313.40
  6. Step 6: Final answer
    x = 114,378.51

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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.