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Finding the Fourth Proportional to 76,796.64, 115,209.74 and 26,890.92

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Solution

The fourth proportional to 76,796.64, 115,209.74 and 26,890.92 is: 40,341.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,796.64 : 115,209.74 = 26,890.92 : x
  2. Step 2: Convert to fraction form
    76,796.64/115,209.74 = 26,890.92/x
  3. Step 3: Cross multiply
    76,796.64x = 115,209.74 × 26,890.92
  4. Step 4: Simplify right side
    76,796.64x = 3,098,095,968.79
  5. Step 5: Solve for x
    x = 3,098,095,968.79/76,796.64
  6. Step 6: Final answer
    x = 40,341.56

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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.