Home / 72,740.94-109,099.26-20,155.74

Finding the Fourth Proportional to 72,740.94, 109,099.26 and 20,155.74

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Solution

The fourth proportional to 72,740.94, 109,099.26 and 20,155.74 is: 30,230.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.94 : 109,099.26 = 20,155.74 : x
  2. Step 2: Convert to fraction form
    72,740.94/109,099.26 = 20,155.74/x
  3. Step 3: Cross multiply
    72,740.94x = 109,099.26 × 20,155.74
  4. Step 4: Simplify right side
    72,740.94x = 2,198,976,318.75
  5. Step 5: Solve for x
    x = 2,198,976,318.75/72,740.94
  6. Step 6: Final answer
    x = 30,230.24

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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.