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Finding the Fourth Proportional to 79,718.82, 119,570.34 and 27,127.56

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Solution

The fourth proportional to 79,718.82, 119,570.34 and 27,127.56 is: 40,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,718.82 : 119,570.34 = 27,127.56 : x
  2. Step 2: Convert to fraction form
    79,718.82/119,570.34 = 27,127.56/x
  3. Step 3: Cross multiply
    79,718.82x = 119,570.34 × 27,127.56
  4. Step 4: Simplify right side
    79,718.82x = 3,243,651,572.57
  5. Step 5: Solve for x
    x = 3,243,651,572.57/79,718.82
  6. Step 6: Final answer
    x = 40,688.66

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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.