Home / 78,287,384.80-117,431,077.20-49,188,037.60

Finding the Fourth Proportional to 78,287,384.80, 117,431,077.20 and 49,188,037.60

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Solution

The fourth proportional to 78,287,384.80, 117,431,077.20 and 49,188,037.60 is: 73,782,056.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287,384.80 : 117,431,077.20 = 49,188,037.60 : x
  2. Step 2: Convert to fraction form
    78,287,384.80/117,431,077.20 = 49,188,037.60/x
  3. Step 3: Cross multiply
    78,287,384.80x = 117,431,077.20 × 49,188,037.60
  4. Step 4: Simplify right side
    78,287,384.80x = 5,776,204,240,722,103
  5. Step 5: Solve for x
    x = 5,776,204,240,722,103/78,287,384.80
  6. Step 6: Final answer
    x = 73,782,056.40

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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.