Home / 80,389,913.40-120,584,870.10-49,778,911.80

Finding the Fourth Proportional to 80,389,913.40, 120,584,870.10 and 49,778,911.80

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Solution

The fourth proportional to 80,389,913.40, 120,584,870.10 and 49,778,911.80 is: 74,668,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389,913.40 : 120,584,870.10 = 49,778,911.80 : x
  2. Step 2: Convert to fraction form
    80,389,913.40/120,584,870.10 = 49,778,911.80/x
  3. Step 3: Cross multiply
    80,389,913.40x = 120,584,870.10 × 49,778,911.80
  4. Step 4: Simplify right side
    80,389,913.40x = 6,002,583,613,122,357
  5. Step 5: Solve for x
    x = 6,002,583,613,122,357/80,389,913.40
  6. Step 6: Final answer
    x = 74,668,367.70

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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.