Home / 78,129.10-117,175.04-33,731.56

Finding the Fourth Proportional to 78,129.10, 117,175.04 and 33,731.56

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Solution

The fourth proportional to 78,129.10, 117,175.04 and 33,731.56 is: 50,589.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,129.10 : 117,175.04 = 33,731.56 : x
  2. Step 2: Convert to fraction form
    78,129.10/117,175.04 = 33,731.56/x
  3. Step 3: Cross multiply
    78,129.10x = 117,175.04 × 33,731.56
  4. Step 4: Simplify right side
    78,129.10x = 3,952,496,892.26
  5. Step 5: Solve for x
    x = 3,952,496,892.26/78,129.10
  6. Step 6: Final answer
    x = 50,589.31

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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.