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Finding the Fourth Proportional to 68,006.80, 101,961.60 and 30,536.20

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Solution

The fourth proportional to 68,006.80, 101,961.60 and 30,536.20 is: 45,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,006.80 : 101,961.60 = 30,536.20 : x
  2. Step 2: Convert to fraction form
    68,006.80/101,961.60 = 30,536.20/x
  3. Step 3: Cross multiply
    68,006.80x = 101,961.60 × 30,536.20
  4. Step 4: Simplify right side
    68,006.80x = 3,113,519,809.92
  5. Step 5: Solve for x
    x = 3,113,519,809.92/68,006.80
  6. Step 6: Final answer
    x = 45,782.48

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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.