Home / 68,431.28-102,663.32-21,684.16

Finding the Fourth Proportional to 68,431.28, 102,663.32 and 21,684.16

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Solution

The fourth proportional to 68,431.28, 102,663.32 and 21,684.16 is: 32,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,431.28 : 102,663.32 = 21,684.16 : x
  2. Step 2: Convert to fraction form
    68,431.28/102,663.32 = 21,684.16/x
  3. Step 3: Cross multiply
    68,431.28x = 102,663.32 × 21,684.16
  4. Step 4: Simplify right side
    68,431.28x = 2,226,167,857.01
  5. Step 5: Solve for x
    x = 2,226,167,857.01/68,431.28
  6. Step 6: Final answer
    x = 32,531.44

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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.