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Finding the Fourth Proportional to 70,504.80, 105,766.92 and 40,936.56

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Solution

The fourth proportional to 70,504.80, 105,766.92 and 40,936.56 is: 61,410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,504.80 : 105,766.92 = 40,936.56 : x
  2. Step 2: Convert to fraction form
    70,504.80/105,766.92 = 40,936.56/x
  3. Step 3: Cross multiply
    70,504.80x = 105,766.92 × 40,936.56
  4. Step 4: Simplify right side
    70,504.80x = 4,329,733,866.60
  5. Step 5: Solve for x
    x = 4,329,733,866.60/70,504.80
  6. Step 6: Final answer
    x = 61,410.48

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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.