Home / 51,431.68-70,976.28-30,211.84

Finding the Fourth Proportional to 51,431.68, 70,976.28 and 30,211.84

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Solution

The fourth proportional to 51,431.68, 70,976.28 and 30,211.84 is: 41,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.68 : 70,976.28 = 30,211.84 : x
  2. Step 2: Convert to fraction form
    51,431.68/70,976.28 = 30,211.84/x
  3. Step 3: Cross multiply
    51,431.68x = 70,976.28 × 30,211.84
  4. Step 4: Simplify right side
    51,431.68x = 2,144,324,015.16
  5. Step 5: Solve for x
    x = 2,144,324,015.16/51,431.68
  6. Step 6: Final answer
    x = 41,692.67

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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.