Home / 45,413.34-68,119.21-20,435.70

Finding the Fourth Proportional to 45,413.34, 68,119.21 and 20,435.70

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Solution

The fourth proportional to 45,413.34, 68,119.21 and 20,435.70 is: 30,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,413.34 : 68,119.21 = 20,435.70 : x
  2. Step 2: Convert to fraction form
    45,413.34/68,119.21 = 20,435.70/x
  3. Step 3: Cross multiply
    45,413.34x = 68,119.21 × 20,435.70
  4. Step 4: Simplify right side
    45,413.34x = 1,392,063,739.80
  5. Step 5: Solve for x
    x = 1,392,063,739.80/45,413.34
  6. Step 6: Final answer
    x = 30,653.19

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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.