Home / 71,828.24-99,121.46-39,563.78

Finding the Fourth Proportional to 71,828.24, 99,121.46 and 39,563.78

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Solution

The fourth proportional to 71,828.24, 99,121.46 and 39,563.78 is: 54,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,828.24 : 99,121.46 = 39,563.78 : x
  2. Step 2: Convert to fraction form
    71,828.24/99,121.46 = 39,563.78/x
  3. Step 3: Cross multiply
    71,828.24x = 99,121.46 × 39,563.78
  4. Step 4: Simplify right side
    71,828.24x = 3,921,619,636.72
  5. Step 5: Solve for x
    x = 3,921,619,636.72/71,828.24
  6. Step 6: Final answer
    x = 54,597.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.