Home / 81,328,168.20-122,086,730.70-49,016,555.40

Finding the Fourth Proportional to 81,328,168.20, 122,086,730.70 and 49,016,555.40

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Solution

The fourth proportional to 81,328,168.20, 122,086,730.70 and 49,016,555.40 is: 73,581,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328,168.20 : 122,086,730.70 = 49,016,555.40 : x
  2. Step 2: Convert to fraction form
    81,328,168.20/122,086,730.70 = 49,016,555.40/x
  3. Step 3: Cross multiply
    81,328,168.20x = 122,086,730.70 × 49,016,555.40
  4. Step 4: Simplify right side
    81,328,168.20x = 5,984,270,998,961,431
  5. Step 5: Solve for x
    x = 5,984,270,998,961,431/81,328,168.20
  6. Step 6: Final answer
    x = 73,581,775.31

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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.