Home / 74,619.11-102,981.63-55,723.43

Finding the Fourth Proportional to 74,619.11, 102,981.63 and 55,723.43

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Solution

The fourth proportional to 74,619.11, 102,981.63 and 55,723.43 is: 76,903.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,619.11 : 102,981.63 = 55,723.43 : x
  2. Step 2: Convert to fraction form
    74,619.11/102,981.63 = 55,723.43/x
  3. Step 3: Cross multiply
    74,619.11x = 102,981.63 × 55,723.43
  4. Step 4: Simplify right side
    74,619.11x = 5,738,489,135.68
  5. Step 5: Solve for x
    x = 5,738,489,135.68/74,619.11
  6. Step 6: Final answer
    x = 76,903.75

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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.