Home / 80,901.33-121,406.67-28,311.27

Finding the Fourth Proportional to 80,901.33, 121,406.67 and 28,311.27

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Solution

The fourth proportional to 80,901.33, 121,406.67 and 28,311.27 is: 42,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,901.33 : 121,406.67 = 28,311.27 : x
  2. Step 2: Convert to fraction form
    80,901.33/121,406.67 = 28,311.27/x
  3. Step 3: Cross multiply
    80,901.33x = 121,406.67 × 28,311.27
  4. Step 4: Simplify right side
    80,901.33x = 3,437,177,014.17
  5. Step 5: Solve for x
    x = 3,437,177,014.17/80,901.33
  6. Step 6: Final answer
    x = 42,486.04

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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.