Home / 45,678.08-68,479.84-20,359.04

Finding the Fourth Proportional to 45,678.08, 68,479.84 and 20,359.04

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Solution

The fourth proportional to 45,678.08, 68,479.84 and 20,359.04 is: 30,521.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,678.08 : 68,479.84 = 20,359.04 : x
  2. Step 2: Convert to fraction form
    45,678.08/68,479.84 = 20,359.04/x
  3. Step 3: Cross multiply
    45,678.08x = 68,479.84 × 20,359.04
  4. Step 4: Simplify right side
    45,678.08x = 1,394,183,801.75
  5. Step 5: Solve for x
    x = 1,394,183,801.75/45,678.08
  6. Step 6: Final answer
    x = 30,521.94

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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.