Home / 45,422.16-68,154.12-20,448.72

Finding the Fourth Proportional to 45,422.16, 68,154.12 and 20,448.72

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Solution

The fourth proportional to 45,422.16, 68,154.12 and 20,448.72 is: 30,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,422.16 : 68,154.12 = 20,448.72 : x
  2. Step 2: Convert to fraction form
    45,422.16/68,154.12 = 20,448.72/x
  3. Step 3: Cross multiply
    45,422.16x = 68,154.12 × 20,448.72
  4. Step 4: Simplify right side
    45,422.16x = 1,393,664,516.73
  5. Step 5: Solve for x
    x = 1,393,664,516.73/45,422.16
  6. Step 6: Final answer
    x = 30,682.48

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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.