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Finding the Fourth Proportional to 80,719.69, 121,053.81 and 26,674.31

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Solution

The fourth proportional to 80,719.69, 121,053.81 and 26,674.31 is: 40,002.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.69 : 121,053.81 = 26,674.31 : x
  2. Step 2: Convert to fraction form
    80,719.69/121,053.81 = 26,674.31/x
  3. Step 3: Cross multiply
    80,719.69x = 121,053.81 × 26,674.31
  4. Step 4: Simplify right side
    80,719.69x = 3,229,026,780.49
  5. Step 5: Solve for x
    x = 3,229,026,780.49/80,719.69
  6. Step 6: Final answer
    x = 40,002.96

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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.