Home / 80,339,525.92-120,520,638.72-25,739,339.68

Finding the Fourth Proportional to 80,339,525.92, 120,520,638.72 and 25,739,339.68

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Solution

The fourth proportional to 80,339,525.92, 120,520,638.72 and 25,739,339.68 is: 38,612,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,339,525.92 : 120,520,638.72 = 25,739,339.68 : x
  2. Step 2: Convert to fraction form
    80,339,525.92/120,520,638.72 = 25,739,339.68/x
  3. Step 3: Cross multiply
    80,339,525.92x = 120,520,638.72 × 25,739,339.68
  4. Step 4: Simplify right side
    80,339,525.92x = 3,102,121,658,464,640.50
  5. Step 5: Solve for x
    x = 3,102,121,658,464,640.50/80,339,525.92
  6. Step 6: Final answer
    x = 38,612,645.80

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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.