Home / 45,405.92-68,108.20-20,428.33

Finding the Fourth Proportional to 45,405.92, 68,108.20 and 20,428.33

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Solution

The fourth proportional to 45,405.92, 68,108.20 and 20,428.33 is: 30,642.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,405.92 : 68,108.20 = 20,428.33 : x
  2. Step 2: Convert to fraction form
    45,405.92/68,108.20 = 20,428.33/x
  3. Step 3: Cross multiply
    45,405.92x = 68,108.20 × 20,428.33
  4. Step 4: Simplify right side
    45,405.92x = 1,391,336,785.31
  5. Step 5: Solve for x
    x = 1,391,336,785.31/45,405.92
  6. Step 6: Final answer
    x = 30,642.19

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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.