Home / 47,457.87-71,170.04-20,816.80

Finding the Fourth Proportional to 47,457.87, 71,170.04 and 20,816.80

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Solution

The fourth proportional to 47,457.87, 71,170.04 and 20,816.80 is: 31,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,457.87 : 71,170.04 = 20,816.80 : x
  2. Step 2: Convert to fraction form
    47,457.87/71,170.04 = 20,816.80/x
  3. Step 3: Cross multiply
    47,457.87x = 71,170.04 × 20,816.80
  4. Step 4: Simplify right side
    47,457.87x = 1,481,532,362.79
  5. Step 5: Solve for x
    x = 1,481,532,362.79/47,457.87
  6. Step 6: Final answer
    x = 31,217.85

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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.