Home / 78,178.96-117,286.67-25,585.26

Finding the Fourth Proportional to 78,178.96, 117,286.67 and 25,585.26

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Solution

The fourth proportional to 78,178.96, 117,286.67 and 25,585.26 is: 38,383.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,178.96 : 117,286.67 = 25,585.26 : x
  2. Step 2: Convert to fraction form
    78,178.96/117,286.67 = 25,585.26/x
  3. Step 3: Cross multiply
    78,178.96x = 117,286.67 × 25,585.26
  4. Step 4: Simplify right side
    78,178.96x = 3,000,809,946.48
  5. Step 5: Solve for x
    x = 3,000,809,946.48/78,178.96
  6. Step 6: Final answer
    x = 38,383.86

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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.