Home / 71,157.28-98,198.88-39,326.56

Finding the Fourth Proportional to 71,157.28, 98,198.88 and 39,326.56

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Solution

The fourth proportional to 71,157.28, 98,198.88 and 39,326.56 is: 54,271.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,157.28 : 98,198.88 = 39,326.56 : x
  2. Step 2: Convert to fraction form
    71,157.28/98,198.88 = 39,326.56/x
  3. Step 3: Cross multiply
    71,157.28x = 98,198.88 × 39,326.56
  4. Step 4: Simplify right side
    71,157.28x = 3,861,824,146.25
  5. Step 5: Solve for x
    x = 3,861,824,146.25/71,157.28
  6. Step 6: Final answer
    x = 54,271.67

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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.