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Finding the Fourth Proportional to 78,979.90, 108,992.24 and 44,991.54

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Solution

The fourth proportional to 78,979.90, 108,992.24 and 44,991.54 is: 62,088.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,979.90 : 108,992.24 = 44,991.54 : x
  2. Step 2: Convert to fraction form
    78,979.90/108,992.24 = 44,991.54/x
  3. Step 3: Cross multiply
    78,979.90x = 108,992.24 × 44,991.54
  4. Step 4: Simplify right side
    78,979.90x = 4,903,728,725.65
  5. Step 5: Solve for x
    x = 4,903,728,725.65/78,979.90
  6. Step 6: Final answer
    x = 62,088.31

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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.