Home / 74,463.86-111,716.58-30,121.68

Finding the Fourth Proportional to 74,463.86, 111,716.58 and 30,121.68

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Solution

The fourth proportional to 74,463.86, 111,716.58 and 30,121.68 is: 45,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,463.86 : 111,716.58 = 30,121.68 : x
  2. Step 2: Convert to fraction form
    74,463.86/111,716.58 = 30,121.68/x
  3. Step 3: Cross multiply
    74,463.86x = 111,716.58 × 30,121.68
  4. Step 4: Simplify right side
    74,463.86x = 3,365,091,073.45
  5. Step 5: Solve for x
    x = 3,365,091,073.45/74,463.86
  6. Step 6: Final answer
    x = 45,190.93

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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.