Home / 74,107.60-102,268.38-40,115.92

Finding the Fourth Proportional to 74,107.60, 102,268.38 and 40,115.92

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Solution

The fourth proportional to 74,107.60, 102,268.38 and 40,115.92 is: 55,359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,107.60 : 102,268.38 = 40,115.92 : x
  2. Step 2: Convert to fraction form
    74,107.60/102,268.38 = 40,115.92/x
  3. Step 3: Cross multiply
    74,107.60x = 102,268.38 × 40,115.92
  4. Step 4: Simplify right side
    74,107.60x = 4,102,590,150.61
  5. Step 5: Solve for x
    x = 4,102,590,150.61/74,107.60
  6. Step 6: Final answer
    x = 55,359.91

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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.