Home / 78,724.67-118,058.27-28,789.97

Finding the Fourth Proportional to 78,724.67, 118,058.27 and 28,789.97

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Solution

The fourth proportional to 78,724.67, 118,058.27 and 28,789.97 is: 43,174.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.67 : 118,058.27 = 28,789.97 : x
  2. Step 2: Convert to fraction form
    78,724.67/118,058.27 = 28,789.97/x
  3. Step 3: Cross multiply
    78,724.67x = 118,058.27 × 28,789.97
  4. Step 4: Simplify right side
    78,724.67x = 3,398,893,317.31
  5. Step 5: Solve for x
    x = 3,398,893,317.31/78,724.67
  6. Step 6: Final answer
    x = 43,174.44

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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.