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Finding the Fourth Proportional to 79,859.70, 110,241.81 and 51,579.18

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Solution

The fourth proportional to 79,859.70, 110,241.81 and 51,579.18 is: 71,202.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,859.70 : 110,241.81 = 51,579.18 : x
  2. Step 2: Convert to fraction form
    79,859.70/110,241.81 = 51,579.18/x
  3. Step 3: Cross multiply
    79,859.70x = 110,241.81 × 51,579.18
  4. Step 4: Simplify right side
    79,859.70x = 5,686,182,161.52
  5. Step 5: Solve for x
    x = 5,686,182,161.52/79,859.70
  6. Step 6: Final answer
    x = 71,202.15

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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.