Home / 81,730,104.38-122,595,608.07-20,319,263.15

Finding the Fourth Proportional to 81,730,104.38, 122,595,608.07 and 20,319,263.15

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Solution

The fourth proportional to 81,730,104.38, 122,595,608.07 and 20,319,263.15 is: 30,479,006.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,730,104.38 : 122,595,608.07 = 20,319,263.15 : x
  2. Step 2: Convert to fraction form
    81,730,104.38/122,595,608.07 = 20,319,263.15/x
  3. Step 3: Cross multiply
    81,730,104.38x = 122,595,608.07 × 20,319,263.15
  4. Step 4: Simplify right side
    81,730,104.38x = 2,491,052,420,795,615.50
  5. Step 5: Solve for x
    x = 2,491,052,420,795,615.50/81,730,104.38
  6. Step 6: Final answer
    x = 30,479,006.97

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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.