Home / 87,829.98-131,745.30-21,270

Finding the Fourth Proportional to 87,829.98, 131,745.30 and 21,270

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Solution

The fourth proportional to 87,829.98, 131,745.30 and 21,270 is: 31,905.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,829.98 : 131,745.30 = 21,270 : x
  2. Step 2: Convert to fraction form
    87,829.98/131,745.30 = 21,270/x
  3. Step 3: Cross multiply
    87,829.98x = 131,745.30 × 21,270
  4. Step 4: Simplify right side
    87,829.98x = 2,802,222,531.00
  5. Step 5: Solve for x
    x = 2,802,222,531.00/87,829.98
  6. Step 6: Final answer
    x = 31,905.08

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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.