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Finding the Fourth Proportional to 68,223.16, 102,332.42 and 20,836.34

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Solution

The fourth proportional to 68,223.16, 102,332.42 and 20,836.34 is: 31,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,223.16 : 102,332.42 = 20,836.34 : x
  2. Step 2: Convert to fraction form
    68,223.16/102,332.42 = 20,836.34/x
  3. Step 3: Cross multiply
    68,223.16x = 102,332.42 × 20,836.34
  4. Step 4: Simplify right side
    68,223.16x = 2,132,233,096.14
  5. Step 5: Solve for x
    x = 2,132,233,096.14/68,223.16
  6. Step 6: Final answer
    x = 31,253.80

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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.