Home / 71,351.28-98,467.72-39,520.20

Finding the Fourth Proportional to 71,351.28, 98,467.72 and 39,520.20

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Solution

The fourth proportional to 71,351.28, 98,467.72 and 39,520.20 is: 54,539.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,351.28 : 98,467.72 = 39,520.20 : x
  2. Step 2: Convert to fraction form
    71,351.28/98,467.72 = 39,520.20/x
  3. Step 3: Cross multiply
    71,351.28x = 98,467.72 × 39,520.20
  4. Step 4: Simplify right side
    71,351.28x = 3,891,463,987.94
  5. Step 5: Solve for x
    x = 3,891,463,987.94/71,351.28
  6. Step 6: Final answer
    x = 54,539.51

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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.