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Finding the Fourth Proportional to 68,310.17, 102,472.08 and 20,924.71

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Solution

The fourth proportional to 68,310.17, 102,472.08 and 20,924.71 is: 31,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,310.17 : 102,472.08 = 20,924.71 : x
  2. Step 2: Convert to fraction form
    68,310.17/102,472.08 = 20,924.71/x
  3. Step 3: Cross multiply
    68,310.17x = 102,472.08 × 20,924.71
  4. Step 4: Simplify right side
    68,310.17x = 2,144,198,557.10
  5. Step 5: Solve for x
    x = 2,144,198,557.10/68,310.17
  6. Step 6: Final answer
    x = 31,389.16

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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.