Home / 81,976.28-122,964.04-25,821.16

Finding the Fourth Proportional to 81,976.28, 122,964.04 and 25,821.16

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Solution

The fourth proportional to 81,976.28, 122,964.04 and 25,821.16 is: 38,731.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,976.28 : 122,964.04 = 25,821.16 : x
  2. Step 2: Convert to fraction form
    81,976.28/122,964.04 = 25,821.16/x
  3. Step 3: Cross multiply
    81,976.28x = 122,964.04 × 25,821.16
  4. Step 4: Simplify right side
    81,976.28x = 3,175,074,151.09
  5. Step 5: Solve for x
    x = 3,175,074,151.09/81,976.28
  6. Step 6: Final answer
    x = 38,731.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.