Home / 77,982,640.80-117,225,903.60-71,936,023.20

Finding the Fourth Proportional to 77,982,640.80, 117,225,903.60 and 71,936,023.20

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Solution

The fourth proportional to 77,982,640.80, 117,225,903.60 and 71,936,023.20 is: 108,136,442.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,982,640.80 : 117,225,903.60 = 71,936,023.20 : x
  2. Step 2: Convert to fraction form
    77,982,640.80/117,225,903.60 = 71,936,023.20/x
  3. Step 3: Cross multiply
    77,982,640.80x = 117,225,903.60 × 71,936,023.20
  4. Step 4: Simplify right side
    77,982,640.80x = 8,432,765,321,010,563
  5. Step 5: Solve for x
    x = 8,432,765,321,010,563/77,982,640.80
  6. Step 6: Final answer
    x = 108,136,442.09

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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.