Home / 50,961.20-70,315.11-30,817.66

Finding the Fourth Proportional to 50,961.20, 70,315.11 and 30,817.66

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Solution

The fourth proportional to 50,961.20, 70,315.11 and 30,817.66 is: 42,521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,961.20 : 70,315.11 = 30,817.66 : x
  2. Step 2: Convert to fraction form
    50,961.20/70,315.11 = 30,817.66/x
  3. Step 3: Cross multiply
    50,961.20x = 70,315.11 × 30,817.66
  4. Step 4: Simplify right side
    50,961.20x = 2,166,946,977.05
  5. Step 5: Solve for x
    x = 2,166,946,977.05/50,961.20
  6. Step 6: Final answer
    x = 42,521.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.