Home / 71,489.85-107,235.49-21,570.36

Finding the Fourth Proportional to 71,489.85, 107,235.49 and 21,570.36

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Solution

The fourth proportional to 71,489.85, 107,235.49 and 21,570.36 is: 32,355.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,489.85 : 107,235.49 = 21,570.36 : x
  2. Step 2: Convert to fraction form
    71,489.85/107,235.49 = 21,570.36/x
  3. Step 3: Cross multiply
    71,489.85x = 107,235.49 × 21,570.36
  4. Step 4: Simplify right side
    71,489.85x = 2,313,108,124.08
  5. Step 5: Solve for x
    x = 2,313,108,124.08/71,489.85
  6. Step 6: Final answer
    x = 32,355.76

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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.