Home / 72,766.15-109,149.53-20,171.84

Finding the Fourth Proportional to 72,766.15, 109,149.53 and 20,171.84

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Solution

The fourth proportional to 72,766.15, 109,149.53 and 20,171.84 is: 30,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,766.15 : 109,149.53 = 20,171.84 : x
  2. Step 2: Convert to fraction form
    72,766.15/109,149.53 = 20,171.84/x
  3. Step 3: Cross multiply
    72,766.15x = 109,149.53 × 20,171.84
  4. Step 4: Simplify right side
    72,766.15x = 2,201,746,208.63
  5. Step 5: Solve for x
    x = 2,201,746,208.63/72,766.15
  6. Step 6: Final answer
    x = 30,257.84

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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.