Home / 74,134.80-111,129.30-36,700.65

Finding the Fourth Proportional to 74,134.80, 111,129.30 and 36,700.65

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Solution

The fourth proportional to 74,134.80, 111,129.30 and 36,700.65 is: 55,014.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.80 : 111,129.30 = 36,700.65 : x
  2. Step 2: Convert to fraction form
    74,134.80/111,129.30 = 36,700.65/x
  3. Step 3: Cross multiply
    74,134.80x = 111,129.30 × 36,700.65
  4. Step 4: Simplify right side
    74,134.80x = 4,078,517,544.05
  5. Step 5: Solve for x
    x = 4,078,517,544.05/74,134.80
  6. Step 6: Final answer
    x = 55,014.89

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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.