Home / 45,406.08-68,111.04-20,441.28

Finding the Fourth Proportional to 45,406.08, 68,111.04 and 20,441.28

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Solution

The fourth proportional to 45,406.08, 68,111.04 and 20,441.28 is: 30,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,406.08 : 68,111.04 = 20,441.28 : x
  2. Step 2: Convert to fraction form
    45,406.08/68,111.04 = 20,441.28/x
  3. Step 3: Cross multiply
    45,406.08x = 68,111.04 × 20,441.28
  4. Step 4: Simplify right side
    45,406.08x = 1,392,276,839.73
  5. Step 5: Solve for x
    x = 1,392,276,839.73/45,406.08
  6. Step 6: Final answer
    x = 30,662.78

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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.