Home / 80,847.68-121,270.44-20,876.36

Finding the Fourth Proportional to 80,847.68, 121,270.44 and 20,876.36

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Solution

The fourth proportional to 80,847.68, 121,270.44 and 20,876.36 is: 31,314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,847.68 : 121,270.44 = 20,876.36 : x
  2. Step 2: Convert to fraction form
    80,847.68/121,270.44 = 20,876.36/x
  3. Step 3: Cross multiply
    80,847.68x = 121,270.44 × 20,876.36
  4. Step 4: Simplify right side
    80,847.68x = 2,531,685,362.80
  5. Step 5: Solve for x
    x = 2,531,685,362.80/80,847.68
  6. Step 6: Final answer
    x = 31,314.26

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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.