Home / 49,478.28-74,189.68-21,380.80

Finding the Fourth Proportional to 49,478.28, 74,189.68 and 21,380.80

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Solution

The fourth proportional to 49,478.28, 74,189.68 and 21,380.80 is: 32,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,478.28 : 74,189.68 = 21,380.80 : x
  2. Step 2: Convert to fraction form
    49,478.28/74,189.68 = 21,380.80/x
  3. Step 3: Cross multiply
    49,478.28x = 74,189.68 × 21,380.80
  4. Step 4: Simplify right side
    49,478.28x = 1,586,234,710.14
  5. Step 5: Solve for x
    x = 1,586,234,710.14/49,478.28
  6. Step 6: Final answer
    x = 32,059.21

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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.