Home / 71,816.24-107,736.05-21,220.40

Finding the Fourth Proportional to 71,816.24, 107,736.05 and 21,220.40

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Solution

The fourth proportional to 71,816.24, 107,736.05 and 21,220.40 is: 31,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,816.24 : 107,736.05 = 21,220.40 : x
  2. Step 2: Convert to fraction form
    71,816.24/107,736.05 = 21,220.40/x
  3. Step 3: Cross multiply
    71,816.24x = 107,736.05 × 21,220.40
  4. Step 4: Simplify right side
    71,816.24x = 2,286,202,238.66
  5. Step 5: Solve for x
    x = 2,286,202,238.66/71,816.24
  6. Step 6: Final answer
    x = 31,834.06

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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.