Home / 80,779.34-121,219.54-30,863.70

Finding the Fourth Proportional to 80,779.34, 121,219.54 and 30,863.70

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Solution

The fourth proportional to 80,779.34, 121,219.54 and 30,863.70 is: 46,314.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779.34 : 121,219.54 = 30,863.70 : x
  2. Step 2: Convert to fraction form
    80,779.34/121,219.54 = 30,863.70/x
  3. Step 3: Cross multiply
    80,779.34x = 121,219.54 × 30,863.70
  4. Step 4: Simplify right side
    80,779.34x = 3,741,283,439.54
  5. Step 5: Solve for x
    x = 3,741,283,439.54/80,779.34
  6. Step 6: Final answer
    x = 46,314.85

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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.