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Finding the Fourth Proportional to 76,788.59, 115,033.43 and 43,407.68

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Solution

The fourth proportional to 76,788.59, 115,033.43 and 43,407.68 is: 65,027.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,788.59 : 115,033.43 = 43,407.68 : x
  2. Step 2: Convert to fraction form
    76,788.59/115,033.43 = 43,407.68/x
  3. Step 3: Cross multiply
    76,788.59x = 115,033.43 × 43,407.68
  4. Step 4: Simplify right side
    76,788.59x = 4,993,333,852.09
  5. Step 5: Solve for x
    x = 4,993,333,852.09/76,788.59
  6. Step 6: Final answer
    x = 65,027.03

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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.