Home / 80,389,859.40-120,584,789.10-49,778,857.80

Finding the Fourth Proportional to 80,389,859.40, 120,584,789.10 and 49,778,857.80

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Solution

The fourth proportional to 80,389,859.40, 120,584,789.10 and 49,778,857.80 is: 74,668,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389,859.40 : 120,584,789.10 = 49,778,857.80 : x
  2. Step 2: Convert to fraction form
    80,389,859.40/120,584,789.10 = 49,778,857.80/x
  3. Step 3: Cross multiply
    80,389,859.40x = 120,584,789.10 × 49,778,857.80
  4. Step 4: Simplify right side
    80,389,859.40x = 6,002,573,069,451,889
  5. Step 5: Solve for x
    x = 6,002,573,069,451,889/80,389,859.40
  6. Step 6: Final answer
    x = 74,668,286.70

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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.