Home / 78,016.89-117,028.68-30,642.26

Finding the Fourth Proportional to 78,016.89, 117,028.68 and 30,642.26

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Solution

The fourth proportional to 78,016.89, 117,028.68 and 30,642.26 is: 45,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,016.89 : 117,028.68 = 30,642.26 : x
  2. Step 2: Convert to fraction form
    78,016.89/117,028.68 = 30,642.26/x
  3. Step 3: Cross multiply
    78,016.89x = 117,028.68 × 30,642.26
  4. Step 4: Simplify right side
    78,016.89x = 3,586,022,654.87
  5. Step 5: Solve for x
    x = 3,586,022,654.87/78,016.89
  6. Step 6: Final answer
    x = 45,964.70

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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.