Home / 80,682.12-120,856.73-47,300.81

Finding the Fourth Proportional to 80,682.12, 120,856.73 and 47,300.81

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Solution

The fourth proportional to 80,682.12, 120,856.73 and 47,300.81 is: 70,853.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,682.12 : 120,856.73 = 47,300.81 : x
  2. Step 2: Convert to fraction form
    80,682.12/120,856.73 = 47,300.81/x
  3. Step 3: Cross multiply
    80,682.12x = 120,856.73 × 47,300.81
  4. Step 4: Simplify right side
    80,682.12x = 5,716,620,382.16
  5. Step 5: Solve for x
    x = 5,716,620,382.16/80,682.12
  6. Step 6: Final answer
    x = 70,853.62

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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.