Home / 78,046.97-117,089.09-25,456.50

Finding the Fourth Proportional to 78,046.97, 117,089.09 and 25,456.50

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Solution

The fourth proportional to 78,046.97, 117,089.09 and 25,456.50 is: 38,190.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,046.97 : 117,089.09 = 25,456.50 : x
  2. Step 2: Convert to fraction form
    78,046.97/117,089.09 = 25,456.50/x
  3. Step 3: Cross multiply
    78,046.97x = 117,089.09 × 25,456.50
  4. Step 4: Simplify right side
    78,046.97x = 2,980,678,292.30
  5. Step 5: Solve for x
    x = 2,980,678,292.30/78,046.97
  6. Step 6: Final answer
    x = 38,190.83

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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.