Home / 79,276.60-109,320.04-55,394.56

Finding the Fourth Proportional to 79,276.60, 109,320.04 and 55,394.56

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Solution

The fourth proportional to 79,276.60, 109,320.04 and 55,394.56 is: 76,387.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,276.60 : 109,320.04 = 55,394.56 : x
  2. Step 2: Convert to fraction form
    79,276.60/109,320.04 = 55,394.56/x
  3. Step 3: Cross multiply
    79,276.60x = 109,320.04 × 55,394.56
  4. Step 4: Simplify right side
    79,276.60x = 6,055,735,514.98
  5. Step 5: Solve for x
    x = 6,055,735,514.98/79,276.60
  6. Step 6: Final answer
    x = 76,387.43

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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.