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Finding the Fourth Proportional to 74,174.84, 102,419.94 and 68,507.32

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Solution

The fourth proportional to 74,174.84, 102,419.94 and 68,507.32 is: 94,594.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,174.84 : 102,419.94 = 68,507.32 : x
  2. Step 2: Convert to fraction form
    74,174.84/102,419.94 = 68,507.32/x
  3. Step 3: Cross multiply
    74,174.84x = 102,419.94 × 68,507.32
  4. Step 4: Simplify right side
    74,174.84x = 7,016,515,796.85
  5. Step 5: Solve for x
    x = 7,016,515,796.85/74,174.84
  6. Step 6: Final answer
    x = 94,594.28

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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.