Home / 80,036.24-120,054.36-20,871.80

Finding the Fourth Proportional to 80,036.24, 120,054.36 and 20,871.80

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Solution

The fourth proportional to 80,036.24, 120,054.36 and 20,871.80 is: 31,307.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,036.24 : 120,054.36 = 20,871.80 : x
  2. Step 2: Convert to fraction form
    80,036.24/120,054.36 = 20,871.80/x
  3. Step 3: Cross multiply
    80,036.24x = 120,054.36 × 20,871.80
  4. Step 4: Simplify right side
    80,036.24x = 2,505,750,591.05
  5. Step 5: Solve for x
    x = 2,505,750,591.05/80,036.24
  6. Step 6: Final answer
    x = 31,307.70

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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.