Home / 78,470.25-117,757.22-36,920.49

Finding the Fourth Proportional to 78,470.25, 117,757.22 and 36,920.49

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Solution

The fourth proportional to 78,470.25, 117,757.22 and 36,920.49 is: 55,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,470.25 : 117,757.22 = 36,920.49 : x
  2. Step 2: Convert to fraction form
    78,470.25/117,757.22 = 36,920.49/x
  3. Step 3: Cross multiply
    78,470.25x = 117,757.22 × 36,920.49
  4. Step 4: Simplify right side
    78,470.25x = 4,347,654,078.84
  5. Step 5: Solve for x
    x = 4,347,654,078.84/78,470.25
  6. Step 6: Final answer
    x = 55,405.13

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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.