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Finding the Fourth Proportional to 78,832.88, 118,179.00 and 28,901.32

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Solution

The fourth proportional to 78,832.88, 118,179.00 and 28,901.32 is: 43,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,832.88 : 118,179.00 = 28,901.32 : x
  2. Step 2: Convert to fraction form
    78,832.88/118,179.00 = 28,901.32/x
  3. Step 3: Cross multiply
    78,832.88x = 118,179.00 × 28,901.32
  4. Step 4: Simplify right side
    78,832.88x = 3,415,529,135.62
  5. Step 5: Solve for x
    x = 3,415,529,135.62/78,832.88
  6. Step 6: Final answer
    x = 43,326.20

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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.