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Finding the Fourth Proportional to 78,388.92, 108,175.50 and 43,933.14

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Solution

The fourth proportional to 78,388.92, 108,175.50 and 43,933.14 is: 60,627.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,388.92 : 108,175.50 = 43,933.14 : x
  2. Step 2: Convert to fraction form
    78,388.92/108,175.50 = 43,933.14/x
  3. Step 3: Cross multiply
    78,388.92x = 108,175.50 × 43,933.14
  4. Step 4: Simplify right side
    78,388.92x = 4,752,489,386.07
  5. Step 5: Solve for x
    x = 4,752,489,386.07/78,388.92
  6. Step 6: Final answer
    x = 60,627.06

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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.