Home / 78,304.32-117,469.44-31,553.28

Finding the Fourth Proportional to 78,304.32, 117,469.44 and 31,553.28

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Solution

The fourth proportional to 78,304.32, 117,469.44 and 31,553.28 is: 47,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,304.32 : 117,469.44 = 31,553.28 : x
  2. Step 2: Convert to fraction form
    78,304.32/117,469.44 = 31,553.28/x
  3. Step 3: Cross multiply
    78,304.32x = 117,469.44 × 31,553.28
  4. Step 4: Simplify right side
    78,304.32x = 3,706,546,131.76
  5. Step 5: Solve for x
    x = 3,706,546,131.76/78,304.32
  6. Step 6: Final answer
    x = 47,335.14

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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.