Home / 74,845.71-112,171.32-30,420.72

Finding the Fourth Proportional to 74,845.71, 112,171.32 and 30,420.72

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Solution

The fourth proportional to 74,845.71, 112,171.32 and 30,420.72 is: 45,591.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,845.71 : 112,171.32 = 30,420.72 : x
  2. Step 2: Convert to fraction form
    74,845.71/112,171.32 = 30,420.72/x
  3. Step 3: Cross multiply
    74,845.71x = 112,171.32 × 30,420.72
  4. Step 4: Simplify right side
    74,845.71x = 3,412,332,317.75
  5. Step 5: Solve for x
    x = 3,412,332,317.75/74,845.71
  6. Step 6: Final answer
    x = 45,591.56

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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.