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Finding the Fourth Proportional to 79,639.58, 109,900.41 and 45,190.59

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Solution

The fourth proportional to 79,639.58, 109,900.41 and 45,190.59 is: 62,361.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,639.58 : 109,900.41 = 45,190.59 : x
  2. Step 2: Convert to fraction form
    79,639.58/109,900.41 = 45,190.59/x
  3. Step 3: Cross multiply
    79,639.58x = 109,900.41 × 45,190.59
  4. Step 4: Simplify right side
    79,639.58x = 4,966,463,819.64
  5. Step 5: Solve for x
    x = 4,966,463,819.64/79,639.58
  6. Step 6: Final answer
    x = 62,361.75

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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.