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Finding the Fourth Proportional to 79,670.30, 119,431.63 and 27,042.87

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Solution

The fourth proportional to 79,670.30, 119,431.63 and 27,042.87 is: 40,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,670.30 : 119,431.63 = 27,042.87 : x
  2. Step 2: Convert to fraction form
    79,670.30/119,431.63 = 27,042.87/x
  3. Step 3: Cross multiply
    79,670.30x = 119,431.63 × 27,042.87
  4. Step 4: Simplify right side
    79,670.30x = 3,229,774,525.65
  5. Step 5: Solve for x
    x = 3,229,774,525.65/79,670.30
  6. Step 6: Final answer
    x = 40,539.26

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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.