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Finding the Fourth Proportional to 91,494.51, 137,245.87 and 40,199.79

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Solution

The fourth proportional to 91,494.51, 137,245.87 and 40,199.79 is: 60,301.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,494.51 : 137,245.87 = 40,199.79 : x
  2. Step 2: Convert to fraction form
    91,494.51/137,245.87 = 40,199.79/x
  3. Step 3: Cross multiply
    91,494.51x = 137,245.87 × 40,199.79
  4. Step 4: Simplify right side
    91,494.51x = 5,517,255,604.23
  5. Step 5: Solve for x
    x = 5,517,255,604.23/91,494.51
  6. Step 6: Final answer
    x = 60,301.49

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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.