Home / 78,890.36-108,871.32-43,083.08

Finding the Fourth Proportional to 78,890.36, 108,871.32 and 43,083.08

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Solution

The fourth proportional to 78,890.36, 108,871.32 and 43,083.08 is: 59,456.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.36 : 108,871.32 = 43,083.08 : x
  2. Step 2: Convert to fraction form
    78,890.36/108,871.32 = 43,083.08/x
  3. Step 3: Cross multiply
    78,890.36x = 108,871.32 × 43,083.08
  4. Step 4: Simplify right side
    78,890.36x = 4,690,511,789.27
  5. Step 5: Solve for x
    x = 4,690,511,789.27/78,890.36
  6. Step 6: Final answer
    x = 59,456.08

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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.