Home / 74,268.39-111,409.29-20,960.95

Finding the Fourth Proportional to 74,268.39, 111,409.29 and 20,960.95

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Solution

The fourth proportional to 74,268.39, 111,409.29 and 20,960.95 is: 31,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,268.39 : 111,409.29 = 20,960.95 : x
  2. Step 2: Convert to fraction form
    74,268.39/111,409.29 = 20,960.95/x
  3. Step 3: Cross multiply
    74,268.39x = 111,409.29 × 20,960.95
  4. Step 4: Simplify right side
    74,268.39x = 2,335,244,890.29
  5. Step 5: Solve for x
    x = 2,335,244,890.29/74,268.39
  6. Step 6: Final answer
    x = 31,443.32

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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.