Home / 78,556.41-108,405.36-42,745.50

Finding the Fourth Proportional to 78,556.41, 108,405.36 and 42,745.50

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Solution

The fourth proportional to 78,556.41, 108,405.36 and 42,745.50 is: 58,987.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.41 : 108,405.36 = 42,745.50 : x
  2. Step 2: Convert to fraction form
    78,556.41/108,405.36 = 42,745.50/x
  3. Step 3: Cross multiply
    78,556.41x = 108,405.36 × 42,745.50
  4. Step 4: Simplify right side
    78,556.41x = 4,633,841,315.88
  5. Step 5: Solve for x
    x = 4,633,841,315.88/78,556.41
  6. Step 6: Final answer
    x = 58,987.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.