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Finding the Fourth Proportional to 86,647.68, 129,922.92 and 27,472.32

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Solution

The fourth proportional to 86,647.68, 129,922.92 and 27,472.32 is: 41,193.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,647.68 : 129,922.92 = 27,472.32 : x
  2. Step 2: Convert to fraction form
    86,647.68/129,922.92 = 27,472.32/x
  3. Step 3: Cross multiply
    86,647.68x = 129,922.92 × 27,472.32
  4. Step 4: Simplify right side
    86,647.68x = 3,569,284,033.57
  5. Step 5: Solve for x
    x = 3,569,284,033.57/86,647.68
  6. Step 6: Final answer
    x = 41,193.07

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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.