Home / 78,011,401.89-117,024,845.03-28,840,144.13

Finding the Fourth Proportional to 78,011,401.89, 117,024,845.03 and 28,840,144.13

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Solution

The fourth proportional to 78,011,401.89, 117,024,845.03 and 28,840,144.13 is: 43,263,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011,401.89 : 117,024,845.03 = 28,840,144.13 : x
  2. Step 2: Convert to fraction form
    78,011,401.89/117,024,845.03 = 28,840,144.13/x
  3. Step 3: Cross multiply
    78,011,401.89x = 117,024,845.03 × 28,840,144.13
  4. Step 4: Simplify right side
    78,011,401.89x = 3,375,013,396,726,789.50
  5. Step 5: Solve for x
    x = 3,375,013,396,726,789.50/78,011,401.89
  6. Step 6: Final answer
    x = 43,263,078.41

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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.