Home / 71,508.42-98,682.30-39,680.28

Finding the Fourth Proportional to 71,508.42, 98,682.30 and 39,680.28

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Solution

The fourth proportional to 71,508.42, 98,682.30 and 39,680.28 is: 54,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,508.42 : 98,682.30 = 39,680.28 : x
  2. Step 2: Convert to fraction form
    71,508.42/98,682.30 = 39,680.28/x
  3. Step 3: Cross multiply
    71,508.42x = 98,682.30 × 39,680.28
  4. Step 4: Simplify right side
    71,508.42x = 3,915,741,295.04
  5. Step 5: Solve for x
    x = 3,915,741,295.04/71,508.42
  6. Step 6: Final answer
    x = 54,759.16

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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.