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Finding the Fourth Proportional to 78,953.88, 108,956.64 and 43,144.44

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Solution

The fourth proportional to 78,953.88, 108,956.64 and 43,144.44 is: 59,539.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,953.88 : 108,956.64 = 43,144.44 : x
  2. Step 2: Convert to fraction form
    78,953.88/108,956.64 = 43,144.44/x
  3. Step 3: Cross multiply
    78,953.88x = 108,956.64 × 43,144.44
  4. Step 4: Simplify right side
    78,953.88x = 4,700,873,217.08
  5. Step 5: Solve for x
    x = 4,700,873,217.08/78,953.88
  6. Step 6: Final answer
    x = 59,539.48

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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.