Home / 76,647,830.40-114,971,745.60-72,112,867.20

Finding the Fourth Proportional to 76,647,830.40, 114,971,745.60 and 72,112,867.20

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Solution

The fourth proportional to 76,647,830.40, 114,971,745.60 and 72,112,867.20 is: 108,169,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,647,830.40 : 114,971,745.60 = 72,112,867.20 : x
  2. Step 2: Convert to fraction form
    76,647,830.40/114,971,745.60 = 72,112,867.20/x
  3. Step 3: Cross multiply
    76,647,830.40x = 114,971,745.60 × 72,112,867.20
  4. Step 4: Simplify right side
    76,647,830.40x = 8,290,942,222,204,984
  5. Step 5: Solve for x
    x = 8,290,942,222,204,984/76,647,830.40
  6. Step 6: Final answer
    x = 108,169,300.80

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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.