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Finding the Fourth Proportional to 68,088.84, 102,133.96 and 20,711.64

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Solution

The fourth proportional to 68,088.84, 102,133.96 and 20,711.64 is: 31,067.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,088.84 : 102,133.96 = 20,711.64 : x
  2. Step 2: Convert to fraction form
    68,088.84/102,133.96 = 20,711.64/x
  3. Step 3: Cross multiply
    68,088.84x = 102,133.96 × 20,711.64
  4. Step 4: Simplify right side
    68,088.84x = 2,115,361,811.29
  5. Step 5: Solve for x
    x = 2,115,361,811.29/68,088.84
  6. Step 6: Final answer
    x = 31,067.67

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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.