Home / 81,870,489.97-122,432,729.72-61,135,488.97

Finding the Fourth Proportional to 81,870,489.97, 122,432,729.72 and 61,135,488.97

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Solution

The fourth proportional to 81,870,489.97, 122,432,729.72 and 61,135,488.97 is: 91,424,697.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,870,489.97 : 122,432,729.72 = 61,135,488.97 : x
  2. Step 2: Convert to fraction form
    81,870,489.97/122,432,729.72 = 61,135,488.97/x
  3. Step 3: Cross multiply
    81,870,489.97x = 122,432,729.72 × 61,135,488.97
  4. Step 4: Simplify right side
    81,870,489.97x = 7,484,984,796,752,292
  5. Step 5: Solve for x
    x = 7,484,984,796,752,292/81,870,489.97
  6. Step 6: Final answer
    x = 91,424,697.71

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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.