Home / 78,444.36-108,198.52-51,578.28

Finding the Fourth Proportional to 78,444.36, 108,198.52 and 51,578.28

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Solution

The fourth proportional to 78,444.36, 108,198.52 and 51,578.28 is: 71,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,444.36 : 108,198.52 = 51,578.28 : x
  2. Step 2: Convert to fraction form
    78,444.36/108,198.52 = 51,578.28/x
  3. Step 3: Cross multiply
    78,444.36x = 108,198.52 × 51,578.28
  4. Step 4: Simplify right side
    78,444.36x = 5,580,693,560.15
  5. Step 5: Solve for x
    x = 5,580,693,560.15/78,444.36
  6. Step 6: Final answer
    x = 71,142.06

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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.