Home / 71,212.76-106,819.50-18,622.36

Finding the Fourth Proportional to 71,212.76, 106,819.50 and 18,622.36

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Solution

The fourth proportional to 71,212.76, 106,819.50 and 18,622.36 is: 27,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,212.76 : 106,819.50 = 18,622.36 : x
  2. Step 2: Convert to fraction form
    71,212.76/106,819.50 = 18,622.36/x
  3. Step 3: Cross multiply
    71,212.76x = 106,819.50 × 18,622.36
  4. Step 4: Simplify right side
    71,212.76x = 1,989,231,184.02
  5. Step 5: Solve for x
    x = 1,989,231,184.02/71,212.76
  6. Step 6: Final answer
    x = 27,933.63

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1.5x scale

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.