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Finding the Fourth Proportional to 78,961.88, 108,967.68 and 43,152.44

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Solution

The fourth proportional to 78,961.88, 108,967.68 and 43,152.44 is: 59,550.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,961.88 : 108,967.68 = 43,152.44 : x
  2. Step 2: Convert to fraction form
    78,961.88/108,967.68 = 43,152.44/x
  3. Step 3: Cross multiply
    78,961.88x = 108,967.68 × 43,152.44
  4. Step 4: Simplify right side
    78,961.88x = 4,702,221,273.14
  5. Step 5: Solve for x
    x = 4,702,221,273.14/78,961.88
  6. Step 6: Final answer
    x = 59,550.52

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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.