Home / 76,829.60-115,202.64-34,660.30

Finding the Fourth Proportional to 76,829.60, 115,202.64 and 34,660.30

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Solution

The fourth proportional to 76,829.60, 115,202.64 and 34,660.30 is: 51,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,829.60 : 115,202.64 = 34,660.30 : x
  2. Step 2: Convert to fraction form
    76,829.60/115,202.64 = 34,660.30/x
  3. Step 3: Cross multiply
    76,829.60x = 115,202.64 × 34,660.30
  4. Step 4: Simplify right side
    76,829.60x = 3,992,957,313.88
  5. Step 5: Solve for x
    x = 3,992,957,313.88/76,829.60
  6. Step 6: Final answer
    x = 51,971.60

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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.