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Finding the Fourth Proportional to 79,687.98, 119,508.21 and 27,085.50

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Solution

The fourth proportional to 79,687.98, 119,508.21 and 27,085.50 is: 40,620.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,687.98 : 119,508.21 = 27,085.50 : x
  2. Step 2: Convert to fraction form
    79,687.98/119,508.21 = 27,085.50/x
  3. Step 3: Cross multiply
    79,687.98x = 119,508.21 × 27,085.50
  4. Step 4: Simplify right side
    79,687.98x = 3,236,939,621.96
  5. Step 5: Solve for x
    x = 3,236,939,621.96/79,687.98
  6. Step 6: Final answer
    x = 40,620.17

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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.