Home / 78,260.32-107,997.36-42,449.44

Finding the Fourth Proportional to 78,260.32, 107,997.36 and 42,449.44

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Solution

The fourth proportional to 78,260.32, 107,997.36 and 42,449.44 is: 58,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,260.32 : 107,997.36 = 42,449.44 : x
  2. Step 2: Convert to fraction form
    78,260.32/107,997.36 = 42,449.44/x
  3. Step 3: Cross multiply
    78,260.32x = 107,997.36 × 42,449.44
  4. Step 4: Simplify right side
    78,260.32x = 4,584,427,453.48
  5. Step 5: Solve for x
    x = 4,584,427,453.48/78,260.32
  6. Step 6: Final answer
    x = 58,579.21

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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.