Home / 71,433.80-98,579.70-39,171.36

Finding the Fourth Proportional to 71,433.80, 98,579.70 and 39,171.36

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Solution

The fourth proportional to 71,433.80, 98,579.70 and 39,171.36 is: 54,057.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,433.80 : 98,579.70 = 39,171.36 : x
  2. Step 2: Convert to fraction form
    71,433.80/98,579.70 = 39,171.36/x
  3. Step 3: Cross multiply
    71,433.80x = 98,579.70 × 39,171.36
  4. Step 4: Simplify right side
    71,433.80x = 3,861,500,917.39
  5. Step 5: Solve for x
    x = 3,861,500,917.39/71,433.80
  6. Step 6: Final answer
    x = 54,057.06

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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.