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Finding the Fourth Proportional to 79,321.16, 109,448.04 and 45,340.41

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Solution

The fourth proportional to 79,321.16, 109,448.04 and 45,340.41 is: 62,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.16 : 109,448.04 = 45,340.41 : x
  2. Step 2: Convert to fraction form
    79,321.16/109,448.04 = 45,340.41/x
  3. Step 3: Cross multiply
    79,321.16x = 109,448.04 × 45,340.41
  4. Step 4: Simplify right side
    79,321.16x = 4,962,419,007.30
  5. Step 5: Solve for x
    x = 4,962,419,007.30/79,321.16
  6. Step 6: Final answer
    x = 62,561.10

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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.