Home / 49,743.12-74,607.31-18,145.78

Finding the Fourth Proportional to 49,743.12, 74,607.31 and 18,145.78

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Solution

The fourth proportional to 49,743.12, 74,607.31 and 18,145.78 is: 27,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,743.12 : 74,607.31 = 18,145.78 : x
  2. Step 2: Convert to fraction form
    49,743.12/74,607.31 = 18,145.78/x
  3. Step 3: Cross multiply
    49,743.12x = 74,607.31 × 18,145.78
  4. Step 4: Simplify right side
    49,743.12x = 1,353,807,833.65
  5. Step 5: Solve for x
    x = 1,353,807,833.65/49,743.12
  6. Step 6: Final answer
    x = 27,215.98

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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.