Home / 71,728.05-98,984.43-39,896.96

Finding the Fourth Proportional to 71,728.05, 98,984.43 and 39,896.96

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Solution

The fourth proportional to 71,728.05, 98,984.43 and 39,896.96 is: 55,057.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,728.05 : 98,984.43 = 39,896.96 : x
  2. Step 2: Convert to fraction form
    71,728.05/98,984.43 = 39,896.96/x
  3. Step 3: Cross multiply
    71,728.05x = 98,984.43 × 39,896.96
  4. Step 4: Simplify right side
    71,728.05x = 3,949,177,349.41
  5. Step 5: Solve for x
    x = 3,949,177,349.41/71,728.05
  6. Step 6: Final answer
    x = 55,057.64

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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.