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Finding the Fourth Proportional to 79,866.85, 110,172.52 and 55,629.42

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Solution

The fourth proportional to 79,866.85, 110,172.52 and 55,629.42 is: 76,738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866.85 : 110,172.52 = 55,629.42 : x
  2. Step 2: Convert to fraction form
    79,866.85/110,172.52 = 55,629.42/x
  3. Step 3: Cross multiply
    79,866.85x = 110,172.52 × 55,629.42
  4. Step 4: Simplify right side
    79,866.85x = 6,128,833,274.03
  5. Step 5: Solve for x
    x = 6,128,833,274.03/79,866.85
  6. Step 6: Final answer
    x = 76,738.14

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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.