Home / 80,557.58-120,805.32-30,611.36

Finding the Fourth Proportional to 80,557.58, 120,805.32 and 30,611.36

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Solution

The fourth proportional to 80,557.58, 120,805.32 and 30,611.36 is: 45,905.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,557.58 : 120,805.32 = 30,611.36 : x
  2. Step 2: Convert to fraction form
    80,557.58/120,805.32 = 30,611.36/x
  3. Step 3: Cross multiply
    80,557.58x = 120,805.32 × 30,611.36
  4. Step 4: Simplify right side
    80,557.58x = 3,698,015,140.44
  5. Step 5: Solve for x
    x = 3,698,015,140.44/80,557.58
  6. Step 6: Final answer
    x = 45,905.24

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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.