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Finding the Fourth Proportional to 86,804.42, 119,792.13 and 49,078.94

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Solution

The fourth proportional to 86,804.42, 119,792.13 and 49,078.94 is: 67,730.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,804.42 : 119,792.13 = 49,078.94 : x
  2. Step 2: Convert to fraction form
    86,804.42/119,792.13 = 49,078.94/x
  3. Step 3: Cross multiply
    86,804.42x = 119,792.13 × 49,078.94
  4. Step 4: Simplify right side
    86,804.42x = 5,879,270,760.74
  5. Step 5: Solve for x
    x = 5,879,270,760.74/86,804.42
  6. Step 6: Final answer
    x = 67,730.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.