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Finding the Fourth Proportional to 68,019.77, 102,029.90 and 20,635.27

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Solution

The fourth proportional to 68,019.77, 102,029.90 and 20,635.27 is: 30,952.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,019.77 : 102,029.90 = 20,635.27 : x
  2. Step 2: Convert to fraction form
    68,019.77/102,029.90 = 20,635.27/x
  3. Step 3: Cross multiply
    68,019.77x = 102,029.90 × 20,635.27
  4. Step 4: Simplify right side
    68,019.77x = 2,105,414,534.57
  5. Step 5: Solve for x
    x = 2,105,414,534.57/68,019.77
  6. Step 6: Final answer
    x = 30,952.98

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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.