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Finding the Fourth Proportional to 96,600, 133,262.64 and 68,321.28

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Solution

The fourth proportional to 96,600, 133,262.64 and 68,321.28 is: 94,251.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,600 : 133,262.64 = 68,321.28 : x
  2. Step 2: Convert to fraction form
    96,600/133,262.64 = 68,321.28/x
  3. Step 3: Cross multiply
    96,600x = 133,262.64 × 68,321.28
  4. Step 4: Simplify right side
    96,600x = 9,104,674,140.98
  5. Step 5: Solve for x
    x = 9,104,674,140.98/96,600
  6. Step 6: Final answer
    x = 94,251.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.