Home / 80,447.12-120,710.88-36,105.56

Finding the Fourth Proportional to 80,447.12, 120,710.88 and 36,105.56

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Solution

The fourth proportional to 80,447.12, 120,710.88 and 36,105.56 is: 54,176.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,447.12 : 120,710.88 = 36,105.56 : x
  2. Step 2: Convert to fraction form
    80,447.12/120,710.88 = 36,105.56/x
  3. Step 3: Cross multiply
    80,447.12x = 120,710.88 × 36,105.56
  4. Step 4: Simplify right side
    80,447.12x = 4,358,333,920.49
  5. Step 5: Solve for x
    x = 4,358,333,920.49/80,447.12
  6. Step 6: Final answer
    x = 54,176.38

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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.