Home / 80,505.24-120,779.73-57,279.30

Finding the Fourth Proportional to 80,505.24, 120,779.73 and 57,279.30

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Solution

The fourth proportional to 80,505.24, 120,779.73 and 57,279.30 is: 85,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,505.24 : 120,779.73 = 57,279.30 : x
  2. Step 2: Convert to fraction form
    80,505.24/120,779.73 = 57,279.30/x
  3. Step 3: Cross multiply
    80,505.24x = 120,779.73 × 57,279.30
  4. Step 4: Simplify right side
    80,505.24x = 6,918,178,388.59
  5. Step 5: Solve for x
    x = 6,918,178,388.59/80,505.24
  6. Step 6: Final answer
    x = 85,934.51

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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.