Home / 78,914.92-118,383.10-25,589.51

Finding the Fourth Proportional to 78,914.92, 118,383.10 and 25,589.51

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Solution

The fourth proportional to 78,914.92, 118,383.10 and 25,589.51 is: 38,387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,914.92 : 118,383.10 = 25,589.51 : x
  2. Step 2: Convert to fraction form
    78,914.92/118,383.10 = 25,589.51/x
  3. Step 3: Cross multiply
    78,914.92x = 118,383.10 × 25,589.51
  4. Step 4: Simplify right side
    78,914.92x = 3,029,365,521.28
  5. Step 5: Solve for x
    x = 3,029,365,521.28/78,914.92
  6. Step 6: Final answer
    x = 38,387.74

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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.