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Finding the Fourth Proportional to 102,959.58, 154,440.89 and 40,629.50

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Solution

The fourth proportional to 102,959.58, 154,440.89 and 40,629.50 is: 60,944.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,959.58 : 154,440.89 = 40,629.50 : x
  2. Step 2: Convert to fraction form
    102,959.58/154,440.89 = 40,629.50/x
  3. Step 3: Cross multiply
    102,959.58x = 154,440.89 × 40,629.50
  4. Step 4: Simplify right side
    102,959.58x = 6,274,856,140.26
  5. Step 5: Solve for x
    x = 6,274,856,140.26/102,959.58
  6. Step 6: Final answer
    x = 60,944.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.