Home / 80,725.73-121,022.98-28,172.12

Finding the Fourth Proportional to 80,725.73, 121,022.98 and 28,172.12

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Solution

The fourth proportional to 80,725.73, 121,022.98 and 28,172.12 is: 42,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,725.73 : 121,022.98 = 28,172.12 : x
  2. Step 2: Convert to fraction form
    80,725.73/121,022.98 = 28,172.12/x
  3. Step 3: Cross multiply
    80,725.73x = 121,022.98 × 28,172.12
  4. Step 4: Simplify right side
    80,725.73x = 3,409,473,169.34
  5. Step 5: Solve for x
    x = 3,409,473,169.34/80,725.73
  6. Step 6: Final answer
    x = 42,235.27

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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.