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Finding the Fourth Proportional to 78,649,672.80, 118,027,653.30 and 44,106,007.80

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Solution

The fourth proportional to 78,649,672.80, 118,027,653.30 and 44,106,007.80 is: 66,188,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,649,672.80 : 118,027,653.30 = 44,106,007.80 : x
  2. Step 2: Convert to fraction form
    78,649,672.80/118,027,653.30 = 44,106,007.80/x
  3. Step 3: Cross multiply
    78,649,672.80x = 118,027,653.30 × 44,106,007.80
  4. Step 4: Simplify right side
    78,649,672.80x = 5,205,728,597,065,495
  5. Step 5: Solve for x
    x = 5,205,728,597,065,495/78,649,672.80
  6. Step 6: Final answer
    x = 66,188,814.42

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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.