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Finding the Fourth Proportional to 79,107.54, 109,168.00 and 42,808.96

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Solution

The fourth proportional to 79,107.54, 109,168.00 and 42,808.96 is: 59,076.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,107.54 : 109,168.00 = 42,808.96 : x
  2. Step 2: Convert to fraction form
    79,107.54/109,168.00 = 42,808.96/x
  3. Step 3: Cross multiply
    79,107.54x = 109,168.00 × 42,808.96
  4. Step 4: Simplify right side
    79,107.54x = 4,673,368,201.45
  5. Step 5: Solve for x
    x = 4,673,368,201.45/79,107.54
  6. Step 6: Final answer
    x = 59,076.14

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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.