Home / 78,060.73-117,091.40-18,896.31

Finding the Fourth Proportional to 78,060.73, 117,091.40 and 18,896.31

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Solution

The fourth proportional to 78,060.73, 117,091.40 and 18,896.31 is: 28,344.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,060.73 : 117,091.40 = 18,896.31 : x
  2. Step 2: Convert to fraction form
    78,060.73/117,091.40 = 18,896.31/x
  3. Step 3: Cross multiply
    78,060.73x = 117,091.40 × 18,896.31
  4. Step 4: Simplify right side
    78,060.73x = 2,212,595,392.73
  5. Step 5: Solve for x
    x = 2,212,595,392.73/78,060.73
  6. Step 6: Final answer
    x = 28,344.54

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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.