Home / 80,529.48-120,779.10-27,928.20

Finding the Fourth Proportional to 80,529.48, 120,779.10 and 27,928.20

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Solution

The fourth proportional to 80,529.48, 120,779.10 and 27,928.20 is: 41,887.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,529.48 : 120,779.10 = 27,928.20 : x
  2. Step 2: Convert to fraction form
    80,529.48/120,779.10 = 27,928.20/x
  3. Step 3: Cross multiply
    80,529.48x = 120,779.10 × 27,928.20
  4. Step 4: Simplify right side
    80,529.48x = 3,373,142,860.62
  5. Step 5: Solve for x
    x = 3,373,142,860.62/80,529.48
  6. Step 6: Final answer
    x = 41,887.06

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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.