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Finding the Fourth Proportional to 75,432.80, 104,114.40 and 49,940.12

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Solution

The fourth proportional to 75,432.80, 104,114.40 and 49,940.12 is: 68,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,432.80 : 104,114.40 = 49,940.12 : x
  2. Step 2: Convert to fraction form
    75,432.80/104,114.40 = 49,940.12/x
  3. Step 3: Cross multiply
    75,432.80x = 104,114.40 × 49,940.12
  4. Step 4: Simplify right side
    75,432.80x = 5,199,485,629.73
  5. Step 5: Solve for x
    x = 5,199,485,629.73/75,432.80
  6. Step 6: Final answer
    x = 68,928.71

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1.5x scale

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.