Home / 80,389,858.40-120,584,787.60-49,778,856.80

Finding the Fourth Proportional to 80,389,858.40, 120,584,787.60 and 49,778,856.80

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Solution

The fourth proportional to 80,389,858.40, 120,584,787.60 and 49,778,856.80 is: 74,668,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389,858.40 : 120,584,787.60 = 49,778,856.80 : x
  2. Step 2: Convert to fraction form
    80,389,858.40/120,584,787.60 = 49,778,856.80/x
  3. Step 3: Cross multiply
    80,389,858.40x = 120,584,787.60 × 49,778,856.80
  4. Step 4: Simplify right side
    80,389,858.40x = 6,002,572,874,198,815
  5. Step 5: Solve for x
    x = 6,002,572,874,198,815/80,389,858.40
  6. Step 6: Final answer
    x = 74,668,285.20

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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.