Home / 71,238.62-98,309.70-39,408.66

Finding the Fourth Proportional to 71,238.62, 98,309.70 and 39,408.66

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Solution

The fourth proportional to 71,238.62, 98,309.70 and 39,408.66 is: 54,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,238.62 : 98,309.70 = 39,408.66 : x
  2. Step 2: Convert to fraction form
    71,238.62/98,309.70 = 39,408.66/x
  3. Step 3: Cross multiply
    71,238.62x = 98,309.70 × 39,408.66
  4. Step 4: Simplify right side
    71,238.62x = 3,874,253,542.00
  5. Step 5: Solve for x
    x = 3,874,253,542.00/71,238.62
  6. Step 6: Final answer
    x = 54,384.17

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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.