Home / 87,970.89-131,954.49-21,411.39

Finding the Fourth Proportional to 87,970.89, 131,954.49 and 21,411.39

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Solution

The fourth proportional to 87,970.89, 131,954.49 and 21,411.39 is: 32,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,970.89 : 131,954.49 = 21,411.39 : x
  2. Step 2: Convert to fraction form
    87,970.89/131,954.49 = 21,411.39/x
  3. Step 3: Cross multiply
    87,970.89x = 131,954.49 × 21,411.39
  4. Step 4: Simplify right side
    87,970.89x = 2,825,328,940.58
  5. Step 5: Solve for x
    x = 2,825,328,940.58/87,970.89
  6. Step 6: Final answer
    x = 32,116.63

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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.