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Finding the Fourth Proportional to 76,797.76, 115,212.32 and 43,532.68

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Solution

The fourth proportional to 76,797.76, 115,212.32 and 43,532.68 is: 65,307.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,797.76 : 115,212.32 = 43,532.68 : x
  2. Step 2: Convert to fraction form
    76,797.76/115,212.32 = 43,532.68/x
  3. Step 3: Cross multiply
    76,797.76x = 115,212.32 × 43,532.68
  4. Step 4: Simplify right side
    76,797.76x = 5,015,501,058.62
  5. Step 5: Solve for x
    x = 5,015,501,058.62/76,797.76
  6. Step 6: Final answer
    x = 65,307.91

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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.