Home / 74,039.18-102,173.68-40,047.56

Finding the Fourth Proportional to 74,039.18, 102,173.68 and 40,047.56

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Solution

The fourth proportional to 74,039.18, 102,173.68 and 40,047.56 is: 55,265.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,039.18 : 102,173.68 = 40,047.56 : x
  2. Step 2: Convert to fraction form
    74,039.18/102,173.68 = 40,047.56/x
  3. Step 3: Cross multiply
    74,039.18x = 102,173.68 × 40,047.56
  4. Step 4: Simplify right side
    74,039.18x = 4,091,806,318.09
  5. Step 5: Solve for x
    x = 4,091,806,318.09/74,039.18
  6. Step 6: Final answer
    x = 55,265.42

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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.