Home / 8,085,372.80-12,128,059.20-5,380,928.60

Finding the Fourth Proportional to 8,085,372.80, 12,128,059.20 and 5,380,928.60

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Solution

The fourth proportional to 8,085,372.80, 12,128,059.20 and 5,380,928.60 is: 8,071,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,372.80 : 12,128,059.20 = 5,380,928.60 : x
  2. Step 2: Convert to fraction form
    8,085,372.80/12,128,059.20 = 5,380,928.60/x
  3. Step 3: Cross multiply
    8,085,372.80x = 12,128,059.20 × 5,380,928.60
  4. Step 4: Simplify right side
    8,085,372.80x = 65,260,220,611,773.11
  5. Step 5: Solve for x
    x = 65,260,220,611,773.11/8,085,372.80
  6. Step 6: Final answer
    x = 8,071,392.90

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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.