Home / 78,060.80-117,091.49-18,896.37

Finding the Fourth Proportional to 78,060.80, 117,091.49 and 18,896.37

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Solution

The fourth proportional to 78,060.80, 117,091.49 and 18,896.37 is: 28,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,060.80 : 117,091.49 = 18,896.37 : x
  2. Step 2: Convert to fraction form
    78,060.80/117,091.49 = 18,896.37/x
  3. Step 3: Cross multiply
    78,060.80x = 117,091.49 × 18,896.37
  4. Step 4: Simplify right side
    78,060.80x = 2,212,604,118.89
  5. Step 5: Solve for x
    x = 2,212,604,118.89/78,060.80
  6. Step 6: Final answer
    x = 28,344.63

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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.