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Finding the Fourth Proportional to 103,955.71, 155,950.39 and 40,741.56

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Solution

The fourth proportional to 103,955.71, 155,950.39 and 40,741.56 is: 61,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,955.71 : 155,950.39 = 40,741.56 : x
  2. Step 2: Convert to fraction form
    103,955.71/155,950.39 = 40,741.56/x
  3. Step 3: Cross multiply
    103,955.71x = 155,950.39 × 40,741.56
  4. Step 4: Simplify right side
    103,955.71x = 6,353,661,668.94
  5. Step 5: Solve for x
    x = 6,353,661,668.94/103,955.71
  6. Step 6: Final answer
    x = 61,118.93

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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.