Home / 80,211.47-120,315.78-27,619.79

Finding the Fourth Proportional to 80,211.47, 120,315.78 and 27,619.79

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Solution

The fourth proportional to 80,211.47, 120,315.78 and 27,619.79 is: 41,429.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.47 : 120,315.78 = 27,619.79 : x
  2. Step 2: Convert to fraction form
    80,211.47/120,315.78 = 27,619.79/x
  3. Step 3: Cross multiply
    80,211.47x = 120,315.78 × 27,619.79
  4. Step 4: Simplify right side
    80,211.47x = 3,323,095,975.71
  5. Step 5: Solve for x
    x = 3,323,095,975.71/80,211.47
  6. Step 6: Final answer
    x = 41,429.19

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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.