Home / 78,129.14-107,747.34-51,261.44

Finding the Fourth Proportional to 78,129.14, 107,747.34 and 51,261.44

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Solution

The fourth proportional to 78,129.14, 107,747.34 and 51,261.44 is: 70,694.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,129.14 : 107,747.34 = 51,261.44 : x
  2. Step 2: Convert to fraction form
    78,129.14/107,747.34 = 51,261.44/x
  3. Step 3: Cross multiply
    78,129.14x = 107,747.34 × 51,261.44
  4. Step 4: Simplify right side
    78,129.14x = 5,523,283,265.83
  5. Step 5: Solve for x
    x = 5,523,283,265.83/78,129.14
  6. Step 6: Final answer
    x = 70,694.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.