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Finding the Fourth Proportional to 68,009.88, 101,921.67 and 51,356.28

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Solution

The fourth proportional to 68,009.88, 101,921.67 and 51,356.28 is: 76,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,009.88 : 101,921.67 = 51,356.28 : x
  2. Step 2: Convert to fraction form
    68,009.88/101,921.67 = 51,356.28/x
  3. Step 3: Cross multiply
    68,009.88x = 101,921.67 × 51,356.28
  4. Step 4: Simplify right side
    68,009.88x = 5,234,317,822.59
  5. Step 5: Solve for x
    x = 5,234,317,822.59/68,009.88
  6. Step 6: Final answer
    x = 76,964.08

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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.