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Finding the Fourth Proportional to 66,087.87, 99,230.21 and 26,721.87

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Solution

The fourth proportional to 66,087.87, 99,230.21 and 26,721.87 is: 40,122.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,087.87 : 99,230.21 = 26,721.87 : x
  2. Step 2: Convert to fraction form
    66,087.87/99,230.21 = 26,721.87/x
  3. Step 3: Cross multiply
    66,087.87x = 99,230.21 × 26,721.87
  4. Step 4: Simplify right side
    66,087.87x = 2,651,616,771.69
  5. Step 5: Solve for x
    x = 2,651,616,771.69/66,087.87
  6. Step 6: Final answer
    x = 40,122.59

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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.