Home / 87,710.54-131,564.64-21,150.14

Finding the Fourth Proportional to 87,710.54, 131,564.64 and 21,150.14

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Solution

The fourth proportional to 87,710.54, 131,564.64 and 21,150.14 is: 31,724.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.54 : 131,564.64 = 21,150.14 : x
  2. Step 2: Convert to fraction form
    87,710.54/131,564.64 = 21,150.14/x
  3. Step 3: Cross multiply
    87,710.54x = 131,564.64 × 21,150.14
  4. Step 4: Simplify right side
    87,710.54x = 2,782,609,897.23
  5. Step 5: Solve for x
    x = 2,782,609,897.23/87,710.54
  6. Step 6: Final answer
    x = 31,724.92

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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.