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Finding the Fourth Proportional to 79,562.45, 119,334.75 and 20,399.51

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Solution

The fourth proportional to 79,562.45, 119,334.75 and 20,399.51 is: 30,596.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,562.45 : 119,334.75 = 20,399.51 : x
  2. Step 2: Convert to fraction form
    79,562.45/119,334.75 = 20,399.51/x
  3. Step 3: Cross multiply
    79,562.45x = 119,334.75 × 20,399.51
  4. Step 4: Simplify right side
    79,562.45x = 2,434,369,829.30
  5. Step 5: Solve for x
    x = 2,434,369,829.30/79,562.45
  6. Step 6: Final answer
    x = 30,596.97

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1.5x scale

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.