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Finding the Fourth Proportional to 79,861.28, 119,810.14 and 27,270

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Solution

The fourth proportional to 79,861.28, 119,810.14 and 27,270 is: 40,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,861.28 : 119,810.14 = 27,270 : x
  2. Step 2: Convert to fraction form
    79,861.28/119,810.14 = 27,270/x
  3. Step 3: Cross multiply
    79,861.28x = 119,810.14 × 27,270
  4. Step 4: Simplify right side
    79,861.28x = 3,267,222,449.63
  5. Step 5: Solve for x
    x = 3,267,222,449.63/79,861.28
  6. Step 6: Final answer
    x = 40,911.22

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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.