Home / 78,589.06-117,884.82-43,750.14

Finding the Fourth Proportional to 78,589.06, 117,884.82 and 43,750.14

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Solution

The fourth proportional to 78,589.06, 117,884.82 and 43,750.14 is: 65,625.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589.06 : 117,884.82 = 43,750.14 : x
  2. Step 2: Convert to fraction form
    78,589.06/117,884.82 = 43,750.14/x
  3. Step 3: Cross multiply
    78,589.06x = 117,884.82 × 43,750.14
  4. Step 4: Simplify right side
    78,589.06x = 5,157,477,378.87
  5. Step 5: Solve for x
    x = 5,157,477,378.87/78,589.06
  6. Step 6: Final answer
    x = 65,625.89

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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.