Home / 68,523.21-102,802.56-21,137.27

Finding the Fourth Proportional to 68,523.21, 102,802.56 and 21,137.27

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Solution

The fourth proportional to 68,523.21, 102,802.56 and 21,137.27 is: 31,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,523.21 : 102,802.56 = 21,137.27 : x
  2. Step 2: Convert to fraction form
    68,523.21/102,802.56 = 21,137.27/x
  3. Step 3: Cross multiply
    68,523.21x = 102,802.56 × 21,137.27
  4. Step 4: Simplify right side
    68,523.21x = 2,172,964,953.40
  5. Step 5: Solve for x
    x = 2,172,964,953.40/68,523.21
  6. Step 6: Final answer
    x = 31,711.37

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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.