Home / 80,120,404.60-120,180,606.90-52,379,184.40

Finding the Fourth Proportional to 80,120,404.60, 120,180,606.90 and 52,379,184.40

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Solution

The fourth proportional to 80,120,404.60, 120,180,606.90 and 52,379,184.40 is: 78,568,776.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,404.60 : 120,180,606.90 = 52,379,184.40 : x
  2. Step 2: Convert to fraction form
    80,120,404.60/120,180,606.90 = 52,379,184.40/x
  3. Step 3: Cross multiply
    80,120,404.60x = 120,180,606.90 × 52,379,184.40
  4. Step 4: Simplify right side
    80,120,404.60x = 6,294,962,170,119,012
  5. Step 5: Solve for x
    x = 6,294,962,170,119,012/80,120,404.60
  6. Step 6: Final answer
    x = 78,568,776.60

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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.