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Finding the Fourth Proportional to 79,212.76, 118,745.31 and 39,723.73

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Solution

The fourth proportional to 79,212.76, 118,745.31 and 39,723.73 is: 59,548.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,212.76 : 118,745.31 = 39,723.73 : x
  2. Step 2: Convert to fraction form
    79,212.76/118,745.31 = 39,723.73/x
  3. Step 3: Cross multiply
    79,212.76x = 118,745.31 × 39,723.73
  4. Step 4: Simplify right side
    79,212.76x = 4,717,006,633.21
  5. Step 5: Solve for x
    x = 4,717,006,633.21/79,212.76
  6. Step 6: Final answer
    x = 59,548.57

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1.5x scale

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.