Home / 80,441.81-120,694.45-30,535.15

Finding the Fourth Proportional to 80,441.81, 120,694.45 and 30,535.15

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Solution

The fourth proportional to 80,441.81, 120,694.45 and 30,535.15 is: 45,814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,441.81 : 120,694.45 = 30,535.15 : x
  2. Step 2: Convert to fraction form
    80,441.81/120,694.45 = 30,535.15/x
  3. Step 3: Cross multiply
    80,441.81x = 120,694.45 × 30,535.15
  4. Step 4: Simplify right side
    80,441.81x = 3,685,423,126.28
  5. Step 5: Solve for x
    x = 3,685,423,126.28/80,441.81
  6. Step 6: Final answer
    x = 45,814.77

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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.