Home / 80,500,277.80-120,750,416.70-54,991,109.80

Finding the Fourth Proportional to 80,500,277.80, 120,750,416.70 and 54,991,109.80

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Solution

The fourth proportional to 80,500,277.80, 120,750,416.70 and 54,991,109.80 is: 82,486,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,500,277.80 : 120,750,416.70 = 54,991,109.80 : x
  2. Step 2: Convert to fraction form
    80,500,277.80/120,750,416.70 = 54,991,109.80/x
  3. Step 3: Cross multiply
    80,500,277.80x = 120,750,416.70 × 54,991,109.80
  4. Step 4: Simplify right side
    80,500,277.80x = 6,640,199,423,145,453
  5. Step 5: Solve for x
    x = 6,640,199,423,145,453/80,500,277.80
  6. Step 6: Final answer
    x = 82,486,664.70

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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.