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Finding the Fourth Proportional to 79,660.30, 109,918.35 and 45,662.53

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Solution

The fourth proportional to 79,660.30, 109,918.35 and 45,662.53 is: 63,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.30 : 109,918.35 = 45,662.53 : x
  2. Step 2: Convert to fraction form
    79,660.30/109,918.35 = 45,662.53/x
  3. Step 3: Cross multiply
    79,660.30x = 109,918.35 × 45,662.53
  4. Step 4: Simplify right side
    79,660.30x = 5,019,149,954.43
  5. Step 5: Solve for x
    x = 5,019,149,954.43/79,660.30
  6. Step 6: Final answer
    x = 63,006.92

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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.