Home / 80,039.25-120,040.65-30,124.62

Finding the Fourth Proportional to 80,039.25, 120,040.65 and 30,124.62

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Solution

The fourth proportional to 80,039.25, 120,040.65 and 30,124.62 is: 45,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,039.25 : 120,040.65 = 30,124.62 : x
  2. Step 2: Convert to fraction form
    80,039.25/120,040.65 = 30,124.62/x
  3. Step 3: Cross multiply
    80,039.25x = 120,040.65 × 30,124.62
  4. Step 4: Simplify right side
    80,039.25x = 3,616,178,965.80
  5. Step 5: Solve for x
    x = 3,616,178,965.80/80,039.25
  6. Step 6: Final answer
    x = 45,180.07

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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.