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Finding the Fourth Proportional to 78,924.33, 108,914.21 and 43,113.42

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Solution

The fourth proportional to 78,924.33, 108,914.21 and 43,113.42 is: 59,495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,924.33 : 108,914.21 = 43,113.42 : x
  2. Step 2: Convert to fraction form
    78,924.33/108,914.21 = 43,113.42/x
  3. Step 3: Cross multiply
    78,924.33x = 108,914.21 × 43,113.42
  4. Step 4: Simplify right side
    78,924.33x = 4,695,664,595.91
  5. Step 5: Solve for x
    x = 4,695,664,595.91/78,924.33
  6. Step 6: Final answer
    x = 59,495.78

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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.