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Finding the Fourth Proportional to 76,978.88, 106,255 and 45,160.64

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Solution

The fourth proportional to 76,978.88, 106,255 and 45,160.64 is: 62,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,978.88 : 106,255 = 45,160.64 : x
  2. Step 2: Convert to fraction form
    76,978.88/106,255 = 45,160.64/x
  3. Step 3: Cross multiply
    76,978.88x = 106,255 × 45,160.64
  4. Step 4: Simplify right side
    76,978.88x = 4,798,543,803.20
  5. Step 5: Solve for x
    x = 4,798,543,803.20/76,978.88
  6. Step 6: Final answer
    x = 62,335.85

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Why These Related Problems?

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