Home / 87,969.10-131,953.92-21,409.24

Finding the Fourth Proportional to 87,969.10, 131,953.92 and 21,409.24

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Solution

The fourth proportional to 87,969.10, 131,953.92 and 21,409.24 is: 32,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,969.10 : 131,953.92 = 21,409.24 : x
  2. Step 2: Convert to fraction form
    87,969.10/131,953.92 = 21,409.24/x
  3. Step 3: Cross multiply
    87,969.10x = 131,953.92 × 21,409.24
  4. Step 4: Simplify right side
    87,969.10x = 2,825,033,142.22
  5. Step 5: Solve for x
    x = 2,825,033,142.22/87,969.10
  6. Step 6: Final answer
    x = 32,113.93

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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.