Home / 80,512.12-120,768.57-47,208.82

Finding the Fourth Proportional to 80,512.12, 120,768.57 and 47,208.82

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Solution

The fourth proportional to 80,512.12, 120,768.57 and 47,208.82 is: 70,813.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.12 : 120,768.57 = 47,208.82 : x
  2. Step 2: Convert to fraction form
    80,512.12/120,768.57 = 47,208.82/x
  3. Step 3: Cross multiply
    80,512.12x = 120,768.57 × 47,208.82
  4. Step 4: Simplify right side
    80,512.12x = 5,701,341,682.79
  5. Step 5: Solve for x
    x = 5,701,341,682.79/80,512.12
  6. Step 6: Final answer
    x = 70,813.46

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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.