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Finding the Fourth Proportional to 89,804.90, 123,928.07 and 49,518.65

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Solution

The fourth proportional to 89,804.90, 123,928.07 and 49,518.65 is: 68,334.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,804.90 : 123,928.07 = 49,518.65 : x
  2. Step 2: Convert to fraction form
    89,804.90/123,928.07 = 49,518.65/x
  3. Step 3: Cross multiply
    89,804.90x = 123,928.07 × 49,518.65
  4. Step 4: Simplify right side
    89,804.90x = 6,136,750,785.73
  5. Step 5: Solve for x
    x = 6,136,750,785.73/89,804.90
  6. Step 6: Final answer
    x = 68,334.25

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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.