Home / 71,122.28-106,689.54-18,531.80

Finding the Fourth Proportional to 71,122.28, 106,689.54 and 18,531.80

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Solution

The fourth proportional to 71,122.28, 106,689.54 and 18,531.80 is: 27,799.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,122.28 : 106,689.54 = 18,531.80 : x
  2. Step 2: Convert to fraction form
    71,122.28/106,689.54 = 18,531.80/x
  3. Step 3: Cross multiply
    71,122.28x = 106,689.54 × 18,531.80
  4. Step 4: Simplify right side
    71,122.28x = 1,977,149,217.37
  5. Step 5: Solve for x
    x = 1,977,149,217.37/71,122.28
  6. Step 6: Final answer
    x = 27,799.29

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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.