Home / 57,639.80-86,467.78-20,191.29

Finding the Fourth Proportional to 57,639.80, 86,467.78 and 20,191.29

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Solution

The fourth proportional to 57,639.80, 86,467.78 and 20,191.29 is: 30,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,639.80 : 86,467.78 = 20,191.29 : x
  2. Step 2: Convert to fraction form
    57,639.80/86,467.78 = 20,191.29/x
  3. Step 3: Cross multiply
    57,639.80x = 86,467.78 × 20,191.29
  4. Step 4: Simplify right side
    57,639.80x = 1,745,896,021.64
  5. Step 5: Solve for x
    x = 1,745,896,021.64/57,639.80
  6. Step 6: Final answer
    x = 30,289.77

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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.