Home / 72,680.33-109,019.41-20,088.65

Finding the Fourth Proportional to 72,680.33, 109,019.41 and 20,088.65

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Solution

The fourth proportional to 72,680.33, 109,019.41 and 20,088.65 is: 30,132.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,680.33 : 109,019.41 = 20,088.65 : x
  2. Step 2: Convert to fraction form
    72,680.33/109,019.41 = 20,088.65/x
  3. Step 3: Cross multiply
    72,680.33x = 109,019.41 × 20,088.65
  4. Step 4: Simplify right side
    72,680.33x = 2,190,052,770.70
  5. Step 5: Solve for x
    x = 2,190,052,770.70/72,680.33
  6. Step 6: Final answer
    x = 30,132.68

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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.