Home / 74,171.20-102,356.74-40,179.68

Finding the Fourth Proportional to 74,171.20, 102,356.74 and 40,179.68

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Solution

The fourth proportional to 74,171.20, 102,356.74 and 40,179.68 is: 55,448.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,171.20 : 102,356.74 = 40,179.68 : x
  2. Step 2: Convert to fraction form
    74,171.20/102,356.74 = 40,179.68/x
  3. Step 3: Cross multiply
    74,171.20x = 102,356.74 × 40,179.68
  4. Step 4: Simplify right side
    74,171.20x = 4,112,661,059.04
  5. Step 5: Solve for x
    x = 4,112,661,059.04/74,171.20
  6. Step 6: Final answer
    x = 55,448.22

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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.